Question

who derived the value for isosceles triangle??​

Answer 1

Answer:

The Steiner–Lehmus theorem states that every triangle with two angle bisectors of equal lengths is isosceles. It was formulated in 1840 by C. L. Lehmus. Its other namesake, Jakob Steiner, was one of the first to provide a solution.

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Answer 2

Answer:

hey mate refer to above attachment

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