Question

be fast and explain brifely

Answer 1

Answer:

By the mid point theorem*, we get that

PQ = 1/2 BC

=> BC = 2 PQ

=> BC = 7cm

Thus, perimeter = AB+BC+AC

= 9 + 7 + 9

= 25cm

* Mid point theorem- The line segment which joins the midpoint of two sides of a triangle is parallel to the third of the triangle and is half of it.