Question

7. Test your knowledge of lines with the following:

a. Are the two lines in the figure below parallel?
NAIO
b. Are the adjacent lines in the figure below parallel?

Answer 1

1.

a. 12° + 68° = 80 neither

b. 95°+ 85° = 180° Supplementary angles

c. 43° + 48° = 91° neither

d. 70°+ 20° = 90° Complimentary angles

2.

angle a = 140

angle b = 105

angle c = 60

3.

a. ∠1 = ∠AEB

b. ∠2 = ∠BEC

c. ∠3 = ∠CED

d. ∠4 = ∠DEA

4.

a. right

b. straight

c. obtuse

d. acute

5.

a. adjacent

b. adjacent

c. vertical

d. vertical

6.

a. perpendicular

b. parallel

c. neither

d. perpendicular

7.

a. Yes

b. Yes

Explanation:

Answer 2

a. Yes, the lines are parallel. The rectangles create an optical illusion that makes the lines appear to be crooked.

b. Yes, the lines (3rd and 4th in diagram) are parallel. To show this is true, place two rulers or straightedges along the lines. You’ll then see that they’re parallel.

Explanation:

PENN