∆ABC is an isoscelesangle in which AB=BC.this triangle is congruent to ∆PQR.if AB=6cm,QR=10cm, find perimeter of ∆ABC
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Class 7 Question

Krishna answered 2 weeks ago
If the triangles are congruent then AB=PQ=BC=QR because they are isosceles triangles so PR is also equal to AC. according to SSS congruency. then we find AB=6,BC=6,AC=10.
Perimeter of the triangle=sum of all sides
=6+6+10=22cm. it is your answer.

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