1.

Prove that the bisector of the vertical angle of an isosceles triangle bisect the base at right angle of PQR ​

Answer»

-step explanation:Consider PQR is an ISOSCELES triangle such that PQ = PR and PL is the BISECTOR of ∠ P. Thus, ∠PLQ = ∠PLR = 90° and QL = LR. Hence, the bisector of the verticle angle an isosceles triangle bisects the base at right angle.



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