Question

Is a triangle with angle measure 40°,30°,and 120° possible?

Answer 1

The total measure of a triangle's angles is always 180 degrees exactly. A triangle with 40, 30, and 120 degree angles has a total of 190 degrees, as 40 + 30 + 120 = 190. Because 190 degrees is greater than 180 degrees, it is not possible.