In a right triangle, one of the angles is always 90°. To find the measure of the third angle, you can use the fact that the sum of the angles in any triangle is 180°.
If one angle is 90° and another angle is 36°, you can calculate the third angle as follows:
\[ \text{Third angle} = 180° - 90° - 36° = 54° \]
Therefore, the measure of the third angle in this triangle is 54°.