Answer:
Explanation:
You want the measures of the unknown angles in a figure involving parallel lines and a right angle.
Parallel lines
Where a transversal crosses parallel lines, consecutive interior angles are supplementary. That means ...
b + 118° = 180°
b = 62° . . . . . . . . . subtract 118° from both sides
Linear angle
A linear angle measures 180°. That means the sum of a, 90°, and b will be 180°:
a + 90° +62° = 180°
a = 28° . . . . . . . . . . . . subtract 152° from both sides