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Question

In figure, X and Y are the points on equal sides of AB and AC such that AX=AY. Show that XC=BY.
1878850_46c335acb10c4e0b99d804d0396cdca8.png

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Solution

In ΔABC
AB=AC (given)
and AX=AY (given)
ABAX=ACAY
BX=CY ….(i)
Now in ΔBXC and ΔBYC
BX=CY [from (i)]
BC=BC (common)
B=C (angle opp. to equal sides are equal)
ΔBXC=ΔBYC (by SAS property)
XC=BY (by c.p.c.t)
Hence proved.

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