1pt

3.

**Use your knowledge of angles to answer the questions below. Show your work. **

Two adjacent angles are supplementary. One angle measures 124◦. What would the complement of the other angle measure?

1pt

5.

Two adjacent angles are complementary. Are the angles acute or obtuse?

1 pt

8.

Which of the following would you use to calculate the measure of ∠7?

A

$180\xb0-m\angle 8\phantom{\rule{0ex}{0ex}}$

B

$m\angle 8+180\xb0\phantom{\rule{0ex}{0ex}}$

C

$m\angle 1+m\angle 2\phantom{\rule{0ex}{0ex}}$

D

$m\angle 2+m\angle 4\phantom{\rule{0ex}{0ex}}$

1 pt

9.

If $\angle 1\ncong \angle 3\phantom{\rule{0ex}{0ex}}$, then which is true?

A

$linem\perp linea\phantom{\rule{0ex}{0ex}}$

B

line a and line b are not parallel

C

$\angle 3\ncong \angle 5\phantom{\rule{0ex}{0ex}}$

D

$m\angle 8=110\xb0\phantom{\rule{0ex}{0ex}}$

1 pt

10.

Which of the following shows eight @ angles?

A

B

C

D