Math, asked by hiba3217, 6 months ago

In quadrilateral ABCD A=100 B=90 C=80

Answers

Answered by isshitaroy
1

Answer:

D = 90°

Step-by-step explanation:

Since the sum of all the angles ofa quadrilateral is 360°. So,

360 - (100+90+80)= 90

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