Question

Can someone please help me with this problem?

Answer 1

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°

Answer 2

Answer:

b=60

c=60

d=60

Step-by-step explanation:

(b-10)+(b+10)+d+c=360

b-10+b+10+d+c=360

b+b+d+c=360

2b+d+c=360

b+d+c=360/2

b+d+c=180

b=60

d=60

c=60