Question

A. 83°
B. 90°
C. 97°
D. cannot be determined

Answer 1

the answer is 90

Explanation:

simpliy because c and b make a right angle

Answer 2

90

Explanation:

c is perpendicular to b

That means angles 5,6,7,8 are 90 degrees

a is parallel to c

That means b is perpendicular to a

That means that 1,2,3,4 are 90 degrees

<1 = 90 degrees