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 _________________.