Question

Abcd is a parallelogram the ratio of angle a and angle b is 5:4 find the measure of angle b

Answer 1

plz can you give me the figure of the parallelogram

Answer 2

Answer:

Step-by-step explanation:angleA : angleB = 5 : 4  

let the constant ratio be 'x'

so now let the angles A = 5x  

and B = 4x  

sum of 2 adjacent angles of parrallelogram = 180°

5x + 4x = 180

9x = 180 => x = 20

Angle B =4 x 20

               =80