Question

Two angles of a triangle are 40° and 70°. The third angle is

_____. (70°, 90°, 80°)​

Answer 1

Answer:

70⁰

Step-by-step explanation:

sum of all angles of any triangle=180⁰

40+70+x=180⁰

110+x=180⁰

x=180-110

x=70⁰

Answer 2

Answer:

The answer will be 70°.

Step-by-step explanation:

Two angles are:

40° and 70°

From angle sum property of a triangle;

Sum of all the angles of a triangle = 180°

Since a triangle have only three angles,

Thus, 40 + 70 + x = 180. (x for some positive integer)

110 + x = 180

x = 70.

Thus the third angle is 70°.

That's all.