Question

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

Explanation:

Step1: Identify angle \(a\)

Angle \(a\) is composed of \(21^{\circ}\) and \(12^{\circ}\).

Step2: Calculate \(m\angle a\)

\(m\angle a=21^{\circ}+12^{\circ}\)
\(m\angle a = 33^{\circ}\)

Answer:

\(33\)