Question

two angles of triangle are 45° and 55°.Find the measure of third angle​

Answer 1

third angle=180°-sum of two angle

=180°-(45°+55°)

=180°-100°

=80°

third angle is 80°

Answer 2

Given ,

First angle of the triangle = 45°

Second angle of the triangle = 55°

To find,

The third angle of the given triangle.

Solution,

We can easily solve this mathematical problem, by a fact that the sum of three angles of a triangle is always 180°.

Let,the third angle = x°

[Assume, x as a variable to do the further mathematical calculations.]

So, according to the previously mentioned data,

x + 45 + 55 = 180

x = 180-100

x = 80

Hence,the third angle of the given triangle is 80°.