Question

If two adjacent angles of a parallelogram are (5x – 5)o, and (10x + 35)o , write down the ratio of these two angles.

Answer 1

Solution:

As we know that the sum of two consecutive angle of a parallelogram is 180°.

Therefore we have an  equation.

(5x-5) + (10x+35) = 180

now on solving we get

15x+30 = 180

15x  = 180-30 = 150

∴ x = 150/15 = 10

Then take the ratio of the measure of these angles

Ration 45:135