Question

If the two angles of a triangle are 80° and 60° .find the third angle​

Answer 1

Answer:

The 3rd angle is 40°.

Step-by-step explanation:

The sum of all angles of triangle = 180°

1st angle = 80°

2nd angle = 60°

3rd angle = ?

Let the 3rd angle be as 'x'.

180° = 80° + 60° + x

180° = 140° + x

x = 180° - 140°

x = 40°

The 3rd angle measures 40°.