Question

Ncert book class10 ka exercise 6.5 ka 5

Answer 1

Given that ΔABC is an isosceles triangle having AC = BC and AB2 = 2AC2

In ΔACB,

AC = BC (Given)

AB2 = 2AC2 (Given)

AB2 = AC2 + AC2

        = AC2 + BC2 [Since, AC = BC]

Hence, By Pythagoras theorem ΔABC is right angle triangle.