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Question

ΔABC is an isosceles triangle with AB=AC. Draw APBC to show that B=C.

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Solution

ABC is an isosceles triangle in which AB=AC
Draw APBC
In ΔABP and ΔACP
hyp. AB = hyp. AC (given)
AP=AP (common)
and APB=APC=900(APBC)
ΔABP=ΔACP
(by RHS congruency rule)
B=C (by c.p.c.t)
Hence proved.
1869976_1878531_ans_4237112f0b2044f2b6882eac2631940e.png

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