Question

find the measurement of third angle if frist angle is 100° and second is 20 °​

Answer 1

Answer:

60 is the answer

Explanation:

we know that sum of all angles in triangle is 180

let third angle is x

100+20+x=180

x=180-120=60

Answer 2

Answer:

60 degree

Explanation:

Sum of all angles=(180)degree

First angle=100degree

Second angle=20degree

Third angle=(180)degree-(100+20)degree

=180degree-120degree

60degree