Question

5. If the sum of two angles of a triangle is equal to the third angle.
Find the third angle.​

Answer 1

Answer:

Step-by-step explanation:

90 degree

Answer 2

Step-by-step explanation:

Let the first angle be a, second be b, and third be c.

Given,

a + b = c [Equation 1]

We know that sum of all angles of a triangle is 180°. Therefore,

a + b + c = 180°

(a + b) + c = 180° [From equation 1]

c + c = 180°

2c = 180°

c = 90°

Therefore the third angle is 90°.