Question

how do i find the measure for the question mark? i’m pretty sure you have to get the angle equaled to 180. but if i add 145 and 60 i get 205. what do i do?

Answer 1

85 degrees

Explanation:

on like line with C A and M, we can assume that it is a straight line. This creates two supplementary angles: angle CAB, and angle BAM. Angle BAM, as we know, is 145 degrees. And since CAB and BAM add up to 180, figure out CAB, we can just do 180-145 which is equal to 35 degrees. Now, it should be known that all angles in a triangle add up to 180 degrees, and since we have two angles, we can easily figure out the third, which is the question mark. 60 + 35 + ? = 180

Simplify:

95 + ? = 180

Isolate and solve:

? = 85 degrees