Question

reABCD is arallelogram the ratio of angle A and angle B of this parallelogram is 5:4 find the measure of angle B​

Answer 1

Answer:

Hey mate here's your answer

Sum of opposite angles of a parallelogram= 180°

let the common ratio be x

5x + 4x = 180°

9x =180°

x = 180/9

x = 20

Angle A=

5x

= 5(20)

= 100°

Angle B=

4x

= 4(20)

=80°

Please mark my answer as brainliest.....