Question

Two angles of a quadrilateral are 68° and 76°. If the other two angles are in the ratio 5:7,
find the measure of each of them.​

Answer 1

Answer:

Let the X in the ratio be 5X & 7X

68° + 76° + 5X° + 7X° = 360 ° ( s. of all angles in a quadrilateral)

12X ° = 360° - 144°

X° = 216° / 12° = 18°

x = 18°

,,,,,, 5x = 5* 18° = 90 °

,,,,,,,7x = 7*18° = 126 °