Question

find the measure of all four angles of parallelogram whose conjuctive angles are in the ratio 1:3​

Answer 1

Answer:

∴ the angles are 60 ∘ ,120 ∘ ,60 ∘ ,120

Answer 2

Answer:

ABCD is a parallelogram.

let angle A = 1x

angle B = 3x

1x + 3x = 180

4x = 180

x = 180/4

x = 45

angle A = 1x = 45 degree

angle B = 3x = 135 degree

In parallelogram,opposite angles are equal then,

angle C = angle A = 45 degree

angle D = angle B = 135 degree