Angles 1 and 6 are corresponding same-side angles with respect to the transversal, so are equal. Angles 3 and 4 are their supplement.
Likewise, angle 5 is the supplement of angle 2.
- m∠3 = 180° - m∠6 = 116°
- m∠4 = m∠3 = 116°
- m∠5 = 180° - m∠2 = 139°
- m∠6 = m∠1 = 64°
