Question

if one angle of a triangle is equal to the sum of other two,show that the triangle is a right Triangle

Answer 1

The right triangle has one 90 degree angle and two acute (< 90 degree) angles. Since the sum of the angles of a triangle is always 180 degrees... y + z = 90 degrees. The two sides of the triangle that are by the right angle are called the legs... and the side opposite of the right angle is called the hypotenuse.

Answer 2

A is equal to B+C IN triangle ABC

THEREFORE A= B+C.......(1)


A+B+C= 180......(2)

A+A=180

2A= 180

A=90

HERE TRIANGLE ABC IS A IS RIGHT ANGLE