In figure three angles of the quadrilateral are given .

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

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2 thoughts on “In figure three angles of the quadrilateral are given .<br /><br />a) What is the measure of inner angle at D ?<br /><br />​”

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

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2. Answer:

   90

   Step-by-step explanation:

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