Question

definition of adjacent angles of a quadrilateral​

Answer 1

Answer:

Two sides of a quadrilateral are called its opposite sides if they do not have a common end point. In the given figure, (AB, DC) and (AD, BC) are two pairs of opposite sides of quadrilateral ABCD. Adjacent Angles of a Quadrilateral. Two angles of a quadrilateral having a common arm are called its adjacent angles.

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Answer 2

In a quadrilateral the some of adjacent angles is 180°

Thus the angles side by side are in total 180°