This document defines various geometry terms over three sentences or less per term. It covers basic shapes and their properties such as points, lines, segments, rays, angles, triangles, quadrilaterals, symmetry, and transformations. Some key terms include acute, obtuse, and right angles, parallel and perpendicular lines, congruent and similar figures, and translations, reflections, and rotations.

1. Geometry Vocabulary
Example
1) Point
______________ in space that is
__________ with a _________ letter
2) Line
series of _________ that extend in
two _____________ directions
without________.
3) Segment
two ______________ and all the
points on the ________ between the
endpoints.
4) Ray
_______ endpoint and all the points
of a line on one _______ of the
endpoint.
5) Collinear Points
Points that if_______________, form
a ____________ line.
6) Non-Collinear Points
Points that if connected do
_____form a straight_______.
7) Plane
flat _____ dimensional surface.

2. 8) Intersecting Lines
______ lines that cross at
__________one________.
9) Parallel Lines
______ lines that have ____ points
in_________.
10) Skew Lines
_________ that are not
____________ and do
not_____________. Skew lines lie in
different___________.
11) Angle
two ________ that connect at a
common____________.
12) Vertex
The ___________endpoint of the two
________of an_________.
13) Degrees
_______ used to measure_________.
Use the (°)__________for degrees.
14) Acute Angle
________ that measures less than
_____.
15) Right Angle
angle that __________ exactly
_____.

3. 16) Obtuse Angle
_________ that measures between
______ and ________.
17) Perpendicular Lines
Lines that ________________to form
__________ angles.
18) Complementary Angles
The ________ of the measure of
______ or more __________ equals
_________.
19) Supplementary Angles
The _________ of the measure of
two or more ______________ equals
__________.
20) Vertical Angles
_____________ that are formed by
two _____________________ lines.
21) Congruent Angles
______________ with ___________
measures.
22) Transversal
________ that crosses ________ or
more __________ at different
___________.

4. 23) Interior Angles
____________ that are on either side
of a ___________________ between
a pair of ____________.
24) Exterior Angles
____________ that are on either side
of a transversal _______________ of
a pair of ____________.
25) Acute Triangle
Includes _______ angles that
measure ________ than _________.
26) Obtuse Triangle
Includes _______ angle that
measures _________ than ________.
27) Right Triangle
Includes _______ angle that
measures exactly ________.
28) Congruent Segments
___________________ that have the
___________ length.

5. 29) Equilateral Triangle
includes _________ sides of
_________ length.
(3 _______________ sides).
30) Isosceles Triangle
includes at least ______
________________ sides.
31) Scalene Triangle
Has ______ ___________________
sides.
32) Polygon
______________ figure that has
_________ or more line
______________ that do not cross.
33) Quadrilateral
a _______________ with ________
sides.
34) Trapezoid
quadrilateral that has exactly one
_________ of _______________
lines.

6. 35) Parallelogram
quadrilateral that has ________ pairs
of _______________ lines.
36) Rectangle
Quadrilateral that has ________
________ angles.
37) Rhombus
quadrilateral that has ________
___________________ sides.
38) Square
quadrilateral that has _________
right ___________ and ________
congruent sides.
39) Congruent Figures
have the same ___________ and
_________.
40) Similar Figures
Have the same __________ but not
necessarily the __________
_________.

7. 41) Line Symmetry
________ can be drawn through a
__________ to create a __________
image
36) Translation
__________; moves every point of a
figure the same ______________ and
same ________________.
37) Reflection
__________ a figure over a
_________ and creates a __________
image of the _______________.
38) Rotation
_________ a ____________ about a
point of _________________.