Given - CF and BE are two Equal Altitudes of ∆ABC P. T ∆BEC congruent ∆CFB
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Step-by-step explanation:
In ΔBCF andΔCBE,
∠BFC=∠CEB (Each 90º)
Hyp. BC= Hyp. BC (Common Side)
Side FC= Side EB (Given)
∴ By R.H.S. criterion of congruence, we have
ΔBCF≅ΔCBE
∴∠FBC=∠ECB (CPCT)
In ΔABC,
∠ABC=∠ACB
[∵∠FBC=∠ECB]
∴AB=AC (Converse of isosceles triangle theorem)
∴ ΔABC is an isosceles triangle.
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