ABC is an isosceles triangle and Angle B is equals to 90 degree then show that AC square is equals to 2 a b square
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Given: ABC is an isosceles triangle and ∠B = 90°
To prove:
In ΔABC, ∠B = 90°
AB = BC ( ∴ ΔABC is an isoscelles triangle)
Two sides of isoscelles triangle are equal.
Using pythagoreous theorem in right triangle ABC
Sum of square of two side of a triangle is equal to square of third side.
hence proved
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