Question

two angle of triangle are 45 degree and 55 degree find the measure of the third angle​

Answer 1

Step-by-step explanation:

sum of all angles in a triangle is 180 degrees.

let the third angle be ×

so 45+55+×=180

100+×=180

×=180-100 (transposition method)

×=80

therefore measure of 3rd angle is 80 degrees..

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