Question

How will you know if a triangle is a right-angled triangle?

Answer 1

A triangle is called as Right Angled Triangle if ;
=> If one of the angle is equal to 90° or a right angle or one - quarter of revolution.

=> If the sum of any two angles in a triangle is equal to 90°

=> If one of the exterior angle is 90°

=> If Its sides satisfies the pythagoras theorem .

Answer 2

Hi!


You can know if a triangle is a right angled triangle, if-

1) One angle of the triangle is 90°
2) If the sides of triangle is perfect by using Pythagoras theorem.
3) Sum of two angled of triangle is 90°
4) Exterior angle=90°


Hope it helps...!!!