Question

The lengths of the sides of some triangles are given below. Find out which of them are right-angled triangles.

(3) 6 m, 7 m, 8 m

Answer 1

The lengths of the sides of the triangle are 6 m, 7 m and 8 m.
Longest side = 8 m
Square of longest side = (8)² = 64
Side one= 6 m
Square of side one = (6)² = 36
Side two = 7 m
Square of side two = (7)² = 49
Sum of square of side one and square of side two = 36 + 49 = 85
≠ Square of longest side
Hence, this is not a right-angled triangle.