In the right triangle ABC, angle C equals 90 degrees, if angle B is 63 degrees, what is the measure of angle A?
The angle A is
One property of the triangles is that the sum of all the angles will always be
In this triangle, one angle is
Note: in a right triangle, the right agnle is always 90°, so we also say that the sum of the two not-right angles is 90°, because 90+90=180.