Question

In figure three angles of the quadrilateral are given .

a) What is the measure of inner angle at D ?

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Answer 1

Answer:

We know that the sum of all angles of a quadrilateral is equal to 360

Then....

=> A+B+C+D=360

=> 110+70+80+D=360

=> 260+D=360

=> D =360-260

=> D =100

Step-by-step explanation:

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Answer 2

Answer:

90

Step-by-step explanation:

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