Question

Two angles of a triangle are 112 and 40° respectively what is the measure of the third angle? a) 25° b) 28° c) 35° d) 75°​

Answer 1

Answer:

112+40+3rd angle=180

152+3rd angle=180

3rd angle= 180–152

3rd angle=28 degree

Answer 2

Answer:

b. 28°

EXPLANATION

Let third angle be x

112°+40°+x=180°(By angle sum property of triangle)

152°+x=180°

x=180°-152°

x=28°