Question

In the quadrilateral ABCD angle a measures 120 degree angle D is two - third of angle C and Angle B measures 90 degree. Find the measure of angle C and angle D ?​

Answer 1

Step-by-step explanation:

Let the angle C be x

Then the angle D be 2/3x

120°+90°+x+2/3x=360°

210°+3x+2x/3=360°

210°+5x/3=360°

5x/3=360°-210°

5x/3=150°

5x=150°×3

x=150°×3/5

x=90°

Therefore angle C= 90°

and angle D=2/3x

= 2/3×90

= 60°

Answer 2

Step-by-step explanation:

answer is 60 degree and explaination is given above