# Question no 5

We have the following situation-

Let ABCD be a quadrilateral and P,Q,R and S be the mid point of the respective sides of the triangle.

Since according to the mid point theorem, line joining the mid-points of two sides of the triangle is parallel to the third side and half of it.

In triangle ABC

Similarly in triangle ADC

Hence, opposite sides are equal and parallel.

Regards
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