 # Selina Solutions Class 9 Mathematics Solutions for Exercise 9(A) in Chapter 9 - Chapter 9- Triangles [Congruency in Triangles]

A line segment AB is bisected at point P and through point P another line

segment PQ, which is perpendicular to AB, is drawn. Show that: QA=QB.

Solution  Video transcript
"hello students my name is promising and i welcome you all to leader learning homework one of india's best online classes now today in this video we have a question that is based on the topic of triangles the question says a line segment a b this is a b is bisected at a point b this is point b and through point b another line segment pq this is pq is drawn which is perpendicular to a b that means this angle is 90 degree so that qa that means this is equal to qb so we have in triangle apq that means a pq this triangle and bpq bbq that means this triangle ap is equal to pb y because b is the midpoint of a b this angle is equal to this angle 90 degree and pq is equal to pq that is common side so based on side angle side criterion triangle apq is congruent to triangle bpq so based on that qa that means this side is equal to this side how cb ct corresponding parts of congruent triangles i hope you have understood the concept very clearly but still if you have any doubt do comment in the comment box and please like and subscribe our channel for lido thank you"
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