Chapter 12 Math Vocabulary Review The slides will play on a loop.

line A straight path that extends   A straight path that extends in both directions without end; marked with an arrowhead at each end.

A piece of a line that has line segment A piece of a line that has two endpoints.

A line with one end point that extends non-stop in the ray A line with one end point that extends non-stop in the opposite direction.

vertex plural: vertices The point where: two or more rays share an endpoint. the edges of a solid figure meet. The point at the top of a cone.

A shape formed by two rays that share an endpoint. angle A shape formed by two rays that share an endpoint.

parallel lines Two (or more) lines that run the same distance apart at every point and will never intersect. para el ll lines

intersecting lines Two or more lines that meet or cross at a point.

Two lines that intersect perpendicular lines Two lines that intersect and form right angles.

Tool used to measure angles. protractor Tool used to measure angles.

1 rotation = 90° 2 rotations = 180° 3 rotations = 270° A full circle rotation is equal to 360° (degrees) When divided into four equal sections, each section is worth 90° 1 rotation = 90° 2 rotations = 180° 3 rotations = 270° 4 rotations = 360° 360° 90° 90° 90° 270° 90° 90° 90° 90° 90° 180°

An angle measuring 90 degrees. right angle An angle measuring 90 degrees.

acute angle An angle that measures LESS than 90 degrees.

obtuse angle An angle that measures MORE than 90 degrees.

straight angle An angle that measures 180 degrees.

polygon four criteria for a A polygon   is made up of all straight line segments is closed (has no breaks in the line segments) is 2-dimensitional, plane shape has no lines that cross over each other a polygon has line segments, vertices, and angles

A polygon with all equal sides and all equal angles. regular polygon A polygon with all equal sides and all equal angles.

have all equal sides and irregular polygon A polygon that does NOT have all equal sides and equal angles.

quadrilateral A polygon with 4 sides.

pentagon A polygon with 5 sides.

hexagon A polygon with 6 sides.

octagon A polygon with 8 sides.

decagon A polygon with 10 sides.

Rhombus all sides have equal length all opposite sides are parallel opposite angles are equal

rectangle A rectangle: four criteria of a is a quadrilateral.   is a quadrilateral. is made up of four line segments. has four 90° angles. is a parallelogram – a four sided polygon with two pairs of parallel sides.

A quadrilateral (four sided polygon) with two pairs of parallel sides. parallelogram A quadrilateral (four sided polygon) with two pairs of parallel sides.

A quadrilateral (four sided polygon) with one pair of parallel sides. trapezoid A quadrilateral (four sided polygon) with one pair of parallel sides.

congruent Figures that have the same size AND same shape. The figures do not have be in the same position. If you placed the two shapes directly on top of each other they would match up perfectly.

Polygons can be classified by the number of sides they have: Prefix Meaning Word tri- 3 triangle quad- 4 quadrilateral pent- 5 pentagon hex- 6 hexagon oct- 8 octagon deca- 10 decagon a pen or a pencil is in your hand that has 5 fingers. tricycle has 3 wheels quad runner has 4 wheels tri- quad- pent- 2000 - 2010 hex and six both have has an “x” an octopus has 8 tentacles a decade is a period of 10 years hex- oct- deca-

line A straight path that extends   A straight path that extends in both directions without end; marked with an arrowhead at each end.

A piece of a line that has line segment A piece of a line that has two endpoints.

A line with one end point that extends non-stop in the ray A line with one end point that extends non-stop in the opposite direction.

vertex plural: vertices The point where: two or more rays share an endpoint. the edges of a solid figure meet. The point at the top of a cone.

A shape formed by two rays that share an endpoint. angle A shape formed by two rays that share an endpoint.

parallel lines Two (or more) lines that run the same distance apart at every point and will never intersect. para el ll lines

intersecting lines Two or more lines that meet or cross at a point.

Two lines that intersect perpendicular lines Two lines that intersect and form right angles.

Tool used to measure angles. protractor Tool used to measure angles.

1 rotation = 90° 2 rotations = 180° 3 rotations = 270° A full circle rotation is equal to 360° (degrees) When divided into four equal sections, each section is worth 90° 1 rotation = 90° 2 rotations = 180° 3 rotations = 270° 4 rotations = 360° 360° 90° 90° 90° 270° 90° 90° 90° 90° 90° 180°

An angle measuring 90 degrees. right angle An angle measuring 90 degrees.

acute angle An angle that measures LESS than 90 degrees.

obtuse angle An angle that measures MORE than 90 degrees.

straight angle An angle that measures 180 degrees.

polygon four criteria for a A polygon   is made up of all straight line segments is closed (has no breaks in the line segments) is 2-dimensitional, plane shape has no lines that cross over each other a polygon has line segments, vertices, and angles

A polygon with all equal sides and all equal angles. regular polygon A polygon with all equal sides and all equal angles.

have all equal sides and irregular polygon A polygon that does NOT have all equal sides and equal angles.

quadrilateral A polygon with 4 sides.

pentagon A polygon with 5 sides.

hexagon A polygon with 6 sides.

octagon A polygon with 8 sides.

decagon A polygon with 10 sides.

Rhombus all sides have equal length all opposite sides are parallel opposite angles are equal

rectangle A rectangle: four criteria of a is a quadrilateral.   is a quadrilateral. is made up of four line segments. has four 90° angles. is a parallelogram – a four sided polygon with two pairs of parallel sides.

A quadrilateral (four sided polygon) with two pairs of parallel sides. parallelogram A quadrilateral (four sided polygon) with two pairs of parallel sides.

A quadrilateral (four sided polygon) with one pair of parallel sides. trapezoid A quadrilateral (four sided polygon) with one pair of parallel sides.

congruent Figures that have the same size AND same shape. The figures do not have be in the same position. If you placed the two shapes directly on top of each other they would match up perfectly.

Polygons can be classified by the number of sides they have: Prefix Meaning Word tri- 3 triangle quad- 4 quadrilateral pent- 5 pentagon hex- 6 hexagon oct- 8 octagon deca- 10 decagon a pen or a pencil is in your hand that has 5 fingers. tricycle has 3 wheels quad runner has 4 wheels tri- quad- pent- 2000 - 2010 hex and six both have has an “x” an octopus has 8 tentacles a decade is a period of 10 years hex- oct- deca-

line A straight path that extends   A straight path that extends in both directions without end; marked with an arrowhead at each end.

A piece of a line that has line segment A piece of a line that has two endpoints.

A line with one end point that extends non-stop in the ray A line with one end point that extends non-stop in the opposite direction.

vertex plural: vertices The point where: two or more rays share an endpoint. the edges of a solid figure meet. The point at the top of a cone.

A shape formed by two rays that share an endpoint. angle A shape formed by two rays that share an endpoint.

parallel lines Two (or more) lines that run the same distance apart at every point and will never intersect. para el ll lines

intersecting lines Two or more lines that meet or cross at a point.

Two lines that intersect perpendicular lines Two lines that intersect and form right angles.

Tool used to measure angles. protractor Tool used to measure angles.

1 rotation = 90° 2 rotations = 180° 3 rotations = 270° A full circle rotation is equal to 360° (degrees) When divided into four equal sections, each section is worth 90° 1 rotation = 90° 2 rotations = 180° 3 rotations = 270° 4 rotations = 360° 360° 90° 90° 90° 270° 90° 90° 90° 90° 90° 180°

An angle measuring 90 degrees. right angle An angle measuring 90 degrees.

acute angle An angle that measures LESS than 90 degrees.

obtuse angle An angle that measures MORE than 90 degrees.

straight angle An angle that measures 180 degrees.

polygon four criteria for a A polygon   is made up of all straight line segments is closed (has no breaks in the line segments) is 2-dimensitional, plane shape has no lines that cross over each other a polygon has line segments, vertices, and angles

A polygon with all equal sides and all equal angles. regular polygon A polygon with all equal sides and all equal angles.

have all equal sides and irregular polygon A polygon that does NOT have all equal sides and equal angles.

quadrilateral A polygon with 4 sides.

pentagon A polygon with 5 sides.

hexagon A polygon with 6 sides.

octagon A polygon with 8 sides.

decagon A polygon with 10 sides.

Rhombus all sides have equal length all opposite sides are parallel opposite angles are equal

rectangle A rectangle: four criteria of a is a quadrilateral.   is a quadrilateral. is made up of four line segments. has four 90° angles. is a parallelogram – a four sided polygon with two pairs of parallel sides.

A quadrilateral (four sided polygon) with two pairs of parallel sides. parallelogram A quadrilateral (four sided polygon) with two pairs of parallel sides.

A quadrilateral (four sided polygon) with one pair of parallel sides. trapezoid A quadrilateral (four sided polygon) with one pair of parallel sides.

congruent Figures that have the same size AND same shape. The figures do not have be in the same position. If you placed the two shapes directly on top of each other they would match up perfectly.

Polygons can be classified by the number of sides they have: Prefix Meaning Word tri- 3 triangle quad- 4 quadrilateral pent- 5 pentagon hex- 6 hexagon oct- 8 octagon deca- 10 decagon a pen or a pencil is in your hand that has 5 fingers. tricycle has 3 wheels quad runner has 4 wheels tri- quad- pent- 2000 - 2010 hex and six both have has an “x” an octopus has 8 tentacles a decade is a period of 10 years hex- oct- deca-

line A straight path that extends   A straight path that extends in both directions without end; marked with an arrowhead at each end.

A piece of a line that has line segment A piece of a line that has two endpoints.

A line with one end point that extends non-stop in the ray A line with one end point that extends non-stop in the opposite direction.

vertex plural: vertices The point where: two or more rays share an endpoint. the edges of a solid figure meet. The point at the top of a cone.

A shape formed by two rays that share an endpoint. angle A shape formed by two rays that share an endpoint.

parallel lines Two (or more) lines that run the same distance apart at every point and will never intersect. para el ll lines

intersecting lines Two or more lines that meet or cross at a point.

Two lines that intersect perpendicular lines Two lines that intersect and form right angles.

Tool used to measure angles. protractor Tool used to measure angles.

1 rotation = 90° 2 rotations = 180° 3 rotations = 270° A full circle rotation is equal to 360° (degrees) When divided into four equal sections, each section is worth 90° 1 rotation = 90° 2 rotations = 180° 3 rotations = 270° 4 rotations = 360° 360° 90° 90° 90° 270° 90° 90° 90° 90° 90° 180°

An angle measuring 90 degrees. right angle An angle measuring 90 degrees.

acute angle An angle that measures LESS than 90 degrees.

obtuse angle An angle that measures MORE than 90 degrees.

straight angle An angle that measures 180 degrees.

polygon four criteria for a A polygon   is made up of all straight line segments is closed (has no breaks in the line segments) is 2-dimensitional, plane shape has no lines that cross over each other a polygon has line segments, vertices, and angles

A polygon with all equal sides and all equal angles. regular polygon A polygon with all equal sides and all equal angles.

have all equal sides and irregular polygon A polygon that does NOT have all equal sides and equal angles.

quadrilateral A polygon with 4 sides.

pentagon A polygon with 5 sides.

hexagon A polygon with 6 sides.

octagon A polygon with 8 sides.

decagon A polygon with 10 sides.

Rhombus all sides have equal length all opposite sides are parallel opposite angles are equal

rectangle A rectangle: four criteria of a is a quadrilateral.   is a quadrilateral. is made up of four line segments. has four 90° angles. is a parallelogram – a four sided polygon with two pairs of parallel sides.

A quadrilateral (four sided polygon) with two pairs of parallel sides. parallelogram A quadrilateral (four sided polygon) with two pairs of parallel sides.

A quadrilateral (four sided polygon) with one pair of parallel sides. trapezoid A quadrilateral (four sided polygon) with one pair of parallel sides.

congruent Figures that have the same size AND same shape. The figures do not have be in the same position. If you placed the two shapes directly on top of each other they would match up perfectly.

Polygons can be classified by the number of sides they have: Prefix Meaning Word tri- 3 triangle quad- 4 quadrilateral pent- 5 pentagon hex- 6 hexagon oct- 8 octagon deca- 10 decagon a pen or a pencil is in your hand that has 5 fingers. tricycle has 3 wheels quad runner has 4 wheels tri- quad- pent- 2000 - 2010 hex and six both have has an “x” an octopus has 8 tentacles a decade is a period of 10 years hex- oct- deca-

line A straight path that extends   A straight path that extends in both directions without end; marked with an arrowhead at each end.

A piece of a line that has line segment A piece of a line that has two endpoints.

A line with one end point that extends non-stop in the ray A line with one end point that extends non-stop in the opposite direction.

vertex plural: vertices The point where: two or more rays share an endpoint. the edges of a solid figure meet. The point at the top of a cone.

A shape formed by two rays that share an endpoint. angle A shape formed by two rays that share an endpoint.

parallel lines Two (or more) lines that run the same distance apart at every point and will never intersect. para el ll lines

intersecting lines Two or more lines that meet or cross at a point.

Two lines that intersect perpendicular lines Two lines that intersect and form right angles.

Tool used to measure angles. protractor Tool used to measure angles.

1 rotation = 90° 2 rotations = 180° 3 rotations = 270° A full circle rotation is equal to 360° (degrees) When divided into four equal sections, each section is worth 90° 1 rotation = 90° 2 rotations = 180° 3 rotations = 270° 4 rotations = 360° 360° 90° 90° 90° 270° 90° 90° 90° 90° 90° 180°

An angle measuring 90 degrees. right angle An angle measuring 90 degrees.

acute angle An angle that measures LESS than 90 degrees.

obtuse angle An angle that measures MORE than 90 degrees.

straight angle An angle that measures 180 degrees.

polygon four criteria for a A polygon   is made up of all straight line segments is closed (has no breaks in the line segments) is 2-dimensitional, plane shape has no lines that cross over each other a polygon has line segments, vertices, and angles

A polygon with all equal sides and all equal angles. regular polygon A polygon with all equal sides and all equal angles.

have all equal sides and irregular polygon A polygon that does NOT have all equal sides and equal angles.

quadrilateral A polygon with 4 sides.

pentagon A polygon with 5 sides.

hexagon A polygon with 6 sides.

octagon A polygon with 8 sides.

decagon A polygon with 10 sides.

Rhombus all sides have equal length all opposite sides are parallel opposite angles are equal

rectangle A rectangle: four criteria of a is a quadrilateral.   is a quadrilateral. is made up of four line segments. has four 90° angles. is a parallelogram – a four sided polygon with two pairs of parallel sides.

A quadrilateral (four sided polygon) with two pairs of parallel sides. parallelogram A quadrilateral (four sided polygon) with two pairs of parallel sides.

A quadrilateral (four sided polygon) with one pair of parallel sides. trapezoid A quadrilateral (four sided polygon) with one pair of parallel sides.

congruent Figures that have the same size AND same shape. The figures do not have be in the same position. If you placed the two shapes directly on top of each other they would match up perfectly.

Polygons can be classified by the number of sides they have: Prefix Meaning Word tri- 3 triangle quad- 4 quadrilateral pent- 5 pentagon hex- 6 hexagon oct- 8 octagon deca- 10 decagon a pen or a pencil is in your hand that has 5 fingers. tricycle has 3 wheels quad runner has 4 wheels tri- quad- pent- 2000 - 2010 hex and six both have has an “x” an octopus has 8 tentacles a decade is a period of 10 years hex- oct- deca-