Question

In a quadrilateral ABCD,angle D is equal to 150°angleA =angle B =angle c.Find angle A,angle B and angle C.​

Answer 1

Answer:

Let the A angle =x

then the B angle=x

the C angle =x

Sum the angle A+B+C =3x

Sum of all angles of quadrilateral =360°

3x+150° =360°

3x =360°-150°

x =210°÷3 = 70°

Hence A=B=C =x =70°