1. Geometry Angles: Acute, Obtuse, Straight, Right
Angle Pairs: Congruent, Vertical, Adjacent, Complementary and Supplementary
Lines: Parallel, Perpendicular, Intersecting
Triangles: Side Classification Angle Classification.
Polygons
Congruent Figures/Similar Figures
Symmetry
Circles
Translation, Rotation, Reflection
Basic Geometry Terms
Point
Line
Ray
Line Segment
Angle
Vertex
Plane

2. Example: Point P .P POINT
QUIZ
Point – an exact location in space. It is ALWAYS named with a capital letter.
Example:
Point P .P

3. LINE Example: Line AB or AB A B
QUIZ
Line – a straight path of point that continues infinitely in two directions. A line is named by any two points on it.
Example:
Line AB or AB
A B

4. Example: Line Segment EF, or EF E F LINE SEGMENT
QUIZ
Line segment- a part of a line that begins at one point and ends at another point.
Example:
Line Segment EF, or EF
E F

5. RAY
QUIZ
Ray - this has one endpoint and continues infinitely in one direction.
Example:
 Ray CD, or CD
C D

6. ANGLE NAMES OF THE ANGLE
QUIZ
Angle – a figure formed by two rays that have the same end point. X
Angle Y,
angle XYZ,
angle ZYX Y
XYZ
ZYX
NAMES
OF THE
ANGLE Y Z

7. VERTEX
QUIZ
Vertex – An angle is named by its vertex or by three points with its vertex in the middle.
Example: Z
(Vertex ) Y X

8. PLANE
QUIZ
Plane – a flat surface. It continues in all directions. It is usually named with a small letter.
Example: m
Plane m

9. ANGLES QUIZ Straight Angle - this measures 180
Right Angles – this measures 90
Obtuse Angle - measures more than 90 but less than 180
Acute Angle - measures less than 90

10. LINES QUIZ Intersecting Lines – Lines that meet
Perpendicular Lines – Lines that intersect and form right angles.
 Parallel Lines – Lines in a plane that never intersect.

11. TRIANGLES QUIZ SIDE CLASSIFICATION Equilateral Isosceles Scalene
- all three sides - two sides - none of the sides are equal. are equal are equal
ANGLE CLASSIFICATION
Acute Right Obtuse
- all angles one angle - one angle measure less than is 90 degrees measures 90 degrees more than degrees

12. POLYGONS QUIZ Number of sides Name Picture 3 Triangle 4 Quadrilateral4
Quadrilateral 5
Pentagon 6
Hexagon 7
Heptagon 8
Octagon 9
Nonagon 10
Decagon

13. CONGRUENT & SIMILAR FIGURES QUIZ
Congruent Figures are EXACTLY the same size AND shape.
Example: Rectangle A is = Rectangle B ~
Reminder:
= means congruent
~ means similar to ~ A B
Similar Figures are the shape, but different sizes.
Example: Square C ~ Square D C D

14. SYMMETRY
QUIZ
A shape has symmetry when you can fold one half over the other half perfectly.
Examples:
These figures do not have any lines of symmetry:

15. CIRCLES QUIZ T U R V S W Name Definition Example Chord
A line segment that has endpoints on the circle TU
Diameter
A chord that passes through the center of a circle. It is twice the length of a radius. SV
Radius
A line segment that extends from the center to any point on the circle. It is half the size of a diameter RW
Central angle
An angle that has its vertex at the center of the circle.
SRW V S W

16. . TRANSLATION ROTATION REFLECTION QUIZ
Translation - when you slide the figure along a straight line.
Reflection – when you flip the figure along a line of symmetry. The new figure is called a reflection.
Rotation – you turn the figure on a curved path around a point. .
Point of rotation

17. ANGLE PAIRS Congruent Angles: Same measure
Vertical Angles: A pair of angles formed by intersecting lines.
(Hint: Think of the angle on the opposite side.)
30 º
30 º
MORE…

18. ANGLE PAIRS cont...
Adjacent Angles – A pair of angles with a common vertex and a common side. (hint: they’re next to each other)
Complimentary Angles: Angles that add up to 90º.
Supplementary Angles: Angles that add up to 180 º.
60º
30º
100º
80º

19. Quiz More Questions What do you call a six sided polygon?
Heptagon b. Hexagon c. Decagon d. quadrilateral
What do you call a triangle with no equal sides?
Scalene b. Obtuse c. Isosceles d. Equilateral
An angle that measures 91 degrees is an __________ angle.
Right b. Obtuse c. Straight d. Acute
A ten sided polygon is called
Tenagon b. Nonagon c. Polygon d. Decagon
Which letter is the vertex in this angle? Angle PHY
a. P b. H c. Y d. there is no vertex
More Questions

20. Quiz Page 2 More Questions Two lines that will never meet are called:
Parallel lines b. Perpendicular lines c. Intersecting lines
Two lines that form right angles when they meet are called:
a. Parallel lines b. Perpendicular lines c. Intersecting lines
Two lines that cross but do not necessarily form right angles are called:
What kind of a triangle has one obtuse angle and two acute angles?
a. Acute triangle b. Obtuse triangle c. Right triangle
More Questions

21. Quiz Page 3 More Questions
What kind of triangle has three acute angles?
Acute triangle b. Obtuse triangle c. Right triangle
What kind of triangle has one right angle?
When a figure can be folded in half perfectly this is called:
Congruent b. Similar c. Symmetry d. Chord
Two figures that are exactly the same shape and size are called:
Two figures that are the same shape but different sizes are called
More Questions

22. Quiz Page 4
A triangle has one angle that measures 45 degrees, another that measures 30, what is the third angle?
95 b c d. 75
In a circle the line that starts at the center and then stops at any point on the circle is called the
Radius b. Diameter c. Chord d. Center
In a circle the line that starts at one point on the circle, travels through the center and then to another point on a circle is called
18. In a circle the line that starts at one point on the circle and travels to another point on a circle is called
a. Radius b. Diameter c. Chord d. Center

23. Quiz Page 5
A figure that starts at one point and stops at another is called a:
Line segment b. Line c. ray d. Point
A figure that starts at one point and then travels on forever in another direction is called:
A figure that goes on forever in both directions is called a
An exact location is called

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