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Can someone please help me with this problem?

Answer»

ong>ANSWER:

B = 90°

c = 80°

d = 100°

Step-by-step explanation:

d = (b + 10°) OPPOSITE angles of parallelogram

c = (b - 10°) Opposite angles of parallelogram

Variable b :-

c + (b + 10°) = 180° (Adjacent angles)

(b - 10°) + (b + 10°) = 180°

b - 10° + b + 10° = 180°

2b + 10° - 10° = 180°

2b = 180°

b = 180°/2

b = 90°

Variable c :-

c = b - 10°

c = 90° - 10°

c = 80°

Variable d :-

d = b + 10°

d = 90° + 10°

d = 100°


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