1. If one angle of a triangle is equal to the sum of the other two, sh

1.	1. If one angle of a triangle is equal to the sum of the other two, show thathe triangle is right angled.
Answer» suppose the angles are x , y and z . z being the greater angle so, from equation x+y = z now sum of angle = 180° or , (x+y)+z = 180° => z+z =180° => 2z = 180°z = 180/2 = 90° so, the greatest angle is 90° . hence proved.

1. If one angle of a triangle is equal to the sum of the other two, show thathe triangle is right angled.

Answer»

suppose the angles are x , y and z . z being the greater angle

so, from equation x+y = z now sum of angle = 180° or , (x+y)+z = 180° => z+z =180° => 2z = 180°z = 180/2 = 90°

so, the greatest angle is 90° . hence proved.