Answer:
"If one angle is equal to 40 degrees and the other two angles are equal, what is the number of degrees in each angle? A right angle is 90°, one angle is 40°, 90° - 40° = 50°. So the remaining two angles have a total measurement of 50°. If these two angles are equal, then each of the remaining angles are 50°/2, or 25°."
Explanation:
Excerpt from Textbook :)