Question

In angleABC, angleA = 64° and angleB =37º. Calculate the value of the exterior angle at C​

Answer 1

Answer:

exterior angle is the sum of two opposite interior angle

so, 64+37 = 101

Answer 2

Answer:

angleA+ angleB+angleC=180

angle A+ angleB= 180- angle C

64+37= 180-C

101=180- angle C

angle C= 180-101 = 79

to find the exterior angle at C,

we know that sum of all the angles on a line is equal to 180

therfore, 79+exterior angle=180

180-79= exterior angle

exterior angle= 101