

7.G.5 Angle Properties Introduction (Vocab)
Presentation
•
Mathematics
•
7th Grade
•
Easy
Standards-aligned
Derrick Routon
Used 41+ times
FREE Resource
10 Slides • 6 Questions
1
7.G.5 Angle Properties
Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and
solve simple equations for an unknown angle in a figure.

2
Supplementary Angles
These are two angels that add together and equal 180 degrees
This feature is nearly always associated with a straight line.
A straight line has an angle measurement of 180 degrees
3
4
Example 1. Two intersecting lines form an 80 degree angle. What is the resulting supplementary angle?
180 = 80 + X
180 - 80 = 80 - 80 + X
100 = X
5
Multiple Choice
What is the measure of angle x?
118
62
26
6
Complementary Angles
Two angles that add together and equal 90 degrees
This feature will always be a right angle
7
8
Example 2. A right angle is intersected by a line forming a 40 degree angle. What is the complementary angle formed by the line?
90 = 40 + X
90 - 40 = 40 - 40 + X
50 = X
9
Multiple Choice
What is the measure of angle x?
105
75
25
15
10
Vertical Angles
The angles opposite of each other that are form by intersecting lines
Vertical angles are always congruent (have the same measurement)
11
12
Example 3. Two straight lines intersect forming four vertical angles. Angle A is equal to 45 degrees. What is the measure of angle C if it is directly across from angle A?
Vertical angles are congurent
Angle A and Angle C are congruent since they are vertical angles
Angle C is equal to 45 degrees
13
Multiple Choice
What is the value of Angle Y?
65
90
115
180
14
Multiple Choice
When two angle measurements add together to equal 180 degrees these angles are called?
Complementary Angles
Supplementary Angles
Vertical Angles
15
Multiple Choice
When two angle measurements add together to equal 90 degrees these angles are called?
Complementary Angles
Supplementary Angles
Vertical Angles
16
Multiple Choice
When two intersecting lines form angles that are opposite each other, these angles are called?
Complementary Angles
Supplementary Angles
Vertical Angles
7.G.5 Angle Properties
Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and
solve simple equations for an unknown angle in a figure.

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