Question

Two angles of a triangle measures 45° and 55° respectively.Find the measure of the third angle.

Answer 1

Answer:

first we add two angle is given there.

45+55= 100

so to find third angle we subtract 180-100= 80 so the answer is 80 degree,, this is the third angle of the triangle

Answer 2

Let angles be A, B, and C.

In triangle ABC,

<A + <B + <C = 180° [Angle sum property]

<A + 45° + 55° = 180°

<A = 180° - 100°

<A = 80°

Hence, the measure of the third angle is 80°.