Additive Angles and Intersecting Lines

If ∠1=70°, what is ∠3?

• 110°

• 70°

• 35°

• 90°

If ∠1=70°, what is ∠4?

• 110°

• 70°

• 35°

• 90°

What is the measure of x?

• 40°

• 50°

• 100°

• 130°

What is the measure of x?

• 38°

• 52°

• 128°

• 142°

The measure of ∠6 is 72°. What is ∠1?

• 18°

• 162°

• 108°

• 72°

The measure of ∠6 is 72°. What is ∠2?

• 90°

• 162°

• 108°

• 72°

The measure of ∠6 is 72°. What is ∠3?

• 18°

• 90°

• 108°

• 72°

The measure of ∠6 is 72°. What is ∠4?

• 18°

• 90°

• 108°

• 72°

ACE is a straight line.

• 40+x+25=90

• 40+x+25=180

• x=90

When viewed from the side, the frame of a ball-return net forms a linear pair. Which equation would be used to find m∠ECD?

• (4x+8)=(x+2)

• (4x+8)+(x+2)=90

• (4x+8)=(x+2)=180

• (4x+8)+(x+2)=180