Mathematics

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.

Triangles

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Answer

In △ QAP and △ QBP,

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. Triangles, Concise Mathematics Solutions ICSE Class 9.

⇒ QP = QP (Common side)

⇒ ∠QPA = ∠QPB (Both equal to 90°)

⇒ AP = PB (Since, AB is bisected at point P)

∴ △ QAP ≅ △ QBP (By S.A.S. axiom)

We know that,

Corresponding parts of congruent triangles are equal.

∴ QA = QB.

Hence, proved that QA = QB.

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