Question

A figure is shown with parallel lines a and b. What is the measure, in degrees, of ∠r?

Answer 1

180-(90+48)=42
You know the triangle is a right angle therefore it’ll be 90 degrees.
And the other angle will be 48 degrees because it’s an alternative angel (z angle)

42 is the answer

Answer 2

42 degrees

Explanation:

48 and r are equal.

The box means right angle, or 90 degrees

180-90-48=42 degrees