Geometry
# Angles and Lines

**false**?

**true** about the yellow and purple angles?

Given that \( \angle a = 53^\circ \) and \( \angle b = 37^\circ \), which of the following statements are true:

I) \( l \) and \( m \) are perpendicular.

II) \( l \) and \( n \) are perpendicular.

III) None of the lines in this diagram are perpendicular.

What is the angle measure (in degrees) between 2 perpendicular lines?