Geometry Vocab
Vertical Angles
Complementary Angles
Supplementary Angles
100

Indicates a location and has no size.

Point

100
Vertical angles are always ___________.
What is congruent?
100
Complementary angles add up to be ______.
What is 90º?
100
Supplementary angles add up to be _________.
What is 180º?
200

Represented by a straight path that extends in both directions endlessly. There is no thickness and an infinite amount of points

Line

200
If angle X and angle Y are vertical angles, and the measure of angle X is 60º, what is the measure of angle Y?
What is 60º?
200
Two complementary angles will form a _______ angle.
What is a right angle?
200
Supplementary angles also form a __________.
What is a linear pair or a straight line or a line segment?
300

Is represented by a flat surface that extends without end. There is no thickness and infinitely many lines.

Plane

300
If angle G and angle H are vertical angles, and the measure of angle G is 120º, what is the measure of angle H?
What is 120º?
300
If angle T and angle V are complementary angles, and the measure of angle T is 40º, what is the measure of angle V?
What is 50º?
300
If angle T and angle V are supplementary angles, and the measure of angle T is 45º, what is the measure of angle V?
What is 135º?
400

A part of a line that consists of one endpoint and all of the points on one side of the endpoint

Ray

400
True or False: Vertical angles are formed by the intersection of two lines (the angles on opposite sides of the intersection).
What is true?
400
If angle A and angle B are complementary angles, and the measure of angle A is 35º, what is the measure of angle B?
What is 55º?
400
If angle K and angle L are supplementary angles, and the measure of angle L is 105º, what is the measure of angle K?
What is 75º?
500

Points that lie on the same plane.

Coplanar points

500
True or False: Vertical angles cannot form a linear pair.
What is false? They can form a linear pair. The measure of both angles would be 180º.
500
If angle C and angle D are complementary angles, and the measure of angle C = (x+5)º measure of angle D= (2x+4)º Find the measure of angle C.
What is 32º ? x+5+2x+4=90 3x=81 x=27 C= 27+5 --> 32
500
If angle B and angle C are supplementary angles, and the measure of angle B = (3x+1)º measure of angle C= (x+19)º Find the measure of angle C.
What is 59º? 3x+1+x+19=180 4x=160 x=40 C=40+19 --> 59
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