Question

Help me plz!!!!!!!!!

Answer 1

Part A - D:8

Part B - C:140°

Solving/Reasoning:

Part A: Vertical angles are always congruent.

Part B: If angles are supplementary, they need to equal 180 when added together. Since we know angle A is 40, we can subtract it from 180 and figure out what is left over that should be angle B.

40+B=180

B=180-40

B=140