Thank you for yoiur help.

1. Emily in in math class.
2. Emily is in a math class.
3. Emily is in a math classroom.
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#1 mean that Emily is learning math from a math teacher. Am I right?
#2 and #3 are the same, aren't they?
#1 and #2 are not the same in meaning?

A. DG.

They all mean about the same.

However, if Emily is in a math classroom, she may be alone.

1. Which is a set of collinear points?

A. G, H. J
B. H, L, G
C. G, I, K
D. K, J, G

D. K, J, G.

Use the diagram to identify a segment parallel to CF.

A. DG
B. AD
C. DC
D. AB

The measure of angle A is 73°. Classify the angle as acute, right, obtuse, or straight.

A. acute
B. straight
C. right
D. obtuse

A. acute.

Find the measures of the complement and the supplement of an angle with measure 50°.

A. complement, 130° supplement, 40°
B. complement, 40°; supplement, 130°
C. complement, 140°; supplement, 230°
D. complement, 30°: supplement, 140°

B. complement, 40°; supplement, 130°.

Complementary angle = 90 - 50 = 40°
Supplementary angle = 180 - 50 = 130°

Name the angle that is supplementary to COD.

A. LCOA
B. LBOC
C. LCOB
D. LBOA