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Answers the question

Answer 1

Answer:

3.take the quadrilateral ABCD

so,<A=85 degree

     <B=85 degree

     <C=85 degree

In a quadrilateral sum of all interior angles=360 degree

     so <A+<B+<C+<D=360 degree

           85+85+85+<D=360

           255+<D=360

            <D=360-255

            <D=115