Question

One angle of a quadrilateral is 60° and the remaining three interior angles are equal. Find the measure of each of the remaining angles.​

Answer 1

Aᥒsᥕᥱr

As we know sum of interior angles of

quadrilateral is 360°

One angle = 60° (given)

Let other 3 angles be x

x + x+ x + 60°=360°

3x +60° = 360°

3x = 360°-60°

3x = 300°

x = 100°

Thus other 3 angles are each of measure 100°

Answer 2

we know that the sum of interior angle of quadrilateral is 360° .

So,

Solution

x + x + x + 60° = 360°

3x + 60° = 360°

3x = 360° - 60°

3x = 300°

x = 300°/ 3

x = 100°

Answer

so, all the three angles are 100° , 100° & 100°

Hope it help you!