M5 l3
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Module 5 Lesson 3 Vertical Angles
Transcript of M5 l3
Module 5 Lesson 3
Vertical Angles
When 2 lines cross, vertical angles are the angles across from each other.Vertical angles are congruent.
What are vertical angles?
The angles represented by A are verticalThe angles represented by B are vertical
Try this easy one…
What is the measure of Angle A?
78!Since vertical angles are congruent, angle A is 78.
The answer is…
Maybe a little harder…
Solve for x.
X=86!Since vertical angles are congruent, you know x+9=95. Solve for x by subtracting 9.
And the answer is…
Ok, try this one…
A=5x-17 and C=2x+19. Find the measure of angle A.
43 degrees!Since the angles are vertical, you set them equal to each other. 5x-17=2x+19Solve for x and get 12.Plug it in (it asks for the angle not x) to get 43.
Answer…
