Polygons with four sides

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Polygons with four sides

Presentation transcript:

Polygons with four sides Quadrilaterals Polygons with four sides

Objectives You will learn about the characteristics of parallelograms. You will use the characteristics of parallelograms to solve problems. You will learn about the characteristics of trapezoids. You will use the characteristics of trapezoids to solve problems.

Types of Quadrilaterals Square: Quadrilateral with four equal sides and four right angles (90 degrees) Indicates equal sides Box indicates 900 angle

Types of Quadrilaterals Rectangle: Quadrilateral with two pairs of equal sides and four right angles (90 degrees) Indicates equal sides Box indicates 900 angle

Types of Quadrilaterals Parallelogram: Quadrilateral with opposite sides that are parallel and of equal length and opposite angles are equal Indicates equal sides

Types of Quadrilaterals Rhombus: Parallelogram with four equal sides and opposite angles equal Indicates equal sides

Types of Quadrilaterals Trapezoid: Quadrilateral with one pair of parallel sides Parallel sides never meet.

Right-Angle Trapezoid

Isosceles Trapezoid A geometric figure with two sides of equal length.

Scalene Trapezoid A geometric figure with sides of unequal lengths.

Types of Quadrilaterals Irregular shapes: Quadrilateral with no equal sides and no equal angles

Name the Quadrilaterals 1 3 2 irregular rhombus rectangle 5 6 4 parallelogram trapezoid square

Interior Angles Interior angles: An interior angle (or internal angle) is an angle formed by two sides of a simple polygon that share an endpoint Interior angles of a quadrilateral always equal 360 degrees Angle sum is the sum of the measures of of all the interior angles in a closed figure.