Question

find the measure of angles ( a ), ( b ), ( c ), and ( d ).
progress: 0/4
part 1 of 4
( m angle a=square^{circ} )

Explanation:

Step1: Identify the relationship between angles

The angle \(a\) is composed of two adjacent angles of \(20^{\circ}\) and \(15^{\circ}\).

Step2: Calculate the measure of angle \(a\)

By the angle - addition postulate, \(m\angle a=20^{\circ}+15^{\circ}\).

Answer:

\(35\)