Homework (angles and triangles

A. Name a pair of adjacent angles in this figure.

B. What common point is shared by all adjacent angles in this figure?

A. Use the vertical angles to find x.

Find the complement to to an $18\degree$  angle. 
Explain your answer.

Find the supplement to a  $133\degree$  angle.
Explain your answer.

The measure of ∠1 is 39°. What is the measure of the angle

adjacent to ∠1? Explain

Find the value of X

In the diagram, m∠1=(125-y)°, m∠2=24°, and m∠3= (x + 46)°. Solve for x and y and find m∠1 and m∠3.

Explain how you found the measure of each angle and the value of each variable.

Can the following side measures form a triangle?
  3, 5, 8 

• Yes
• No

Tags

CCSS.7.G.A.2

9. Which of these lengths CANNOT represent the sides of a triangle?

• 32, 34, 60
• 28, 30, 58
• 13, 20, 27
• 2, 4, 5

Tags

CCSS.7.G.A.2

Does a triangle with these side lengths exist?
15, 12, 9

• Yes
• No
• I don't know.

Tags

CCSS.7.G.A.2