Question

ABCD is a parallelogram find Angle B if Angle A = 3 X - 20 and angle C = X + 50​ ( options are 70°,30°,110°)​

Answer 1

Answer:

angle A= angle C = 85°

angle B =angle D= 180°-85°= 95°

Step-by-step explanation:

ABCD is a parallelogram

if Angle A = 3 X - 20 °

and angle C = X + 50 °

Angle A = angle C

3 X - 20° = X + 50 °

3X - X = 50°+20°

2 X = 70

X = 35°

angle A= angle C = 85°

angle B =angle D= 180°-85°= 95°