Question

Prove that in a triangle if one of the angles is equal to sum of the other two angels then it is a right-angled triangle​

Answer 1

Answer:

Step-by-step explanation:

suppose we take one angle is 90 and other two angles are x and y

according to triangle law sum of all the three angles in a triangle is always equal to 180

a/p

90+x+y=180

x+y=180-90=90

hence the condition is proved