Question

two angles of triangle are 45' and 55' find the meassure of 3rd angle​

Answer 1

Answer:

the measure of third angle is 80..

Answer 2

let the third angle be = x

so,

we know that,

sum of all the angles of a triangle is 180

so,

45+55+ x =180

100+ x = 180

x=180-100

x=80°

therefore, third angle is 180°