Question

Two adjacent angles of a parallelogram are in the ratio 7:2 . Find the measure of all the angles of a parallelogram.

Answer 1

Adjacent angles of a parallelogram are supplementary, which means their sum is 180. SO,
7x+2x=180
x=20
7x=140
2x=40

Opposite angles of a parallelogram are equal, so in a parallelogram ABCD angle A is equal to angle C and Angle B is equal to angle D. 

Answer 2

Answer:

Step-by-step explanation:Ratio of adjacent angles =7:2

angle A=7x and angleB=2x

Sum of adjacent angles of ||gm =180 degree

7x+2x=180degree

9x=180degree

X=180/9

x=20degree

ANGLE A IS 7x=7×20 = 140degree

ANGLE B IS 2x=2×20= 40degree

ANGLE C= ANGLE D =x=20degree

Hope it helps✌✌