Question

If the sides of a triangle are 3 cm, 4 cm, and 6 cm long, determine whether the triangle is a right-angled triangle.

Answer 1

We have,

Sides of triangle

AB = 3 cm

BC = 4 cm

AC = 6 cm

∴ AB² = 32 = 9

BC² = 42 = 16

AC² = 62 = 36

Since, AB² + BC² ≠ AC²

Then, by converse of Pythagoras theorem, triangle is not a right triangle.