Answer:
1 = 90°
2 = 60°
3 = 30°
4 = 30°
Step-by-step explanation:
Angle 1 = 90°, because each interior angles of a square/rectangle is always 90°.
Angle 2 = 60°, because each interior angles of an equilateral triangle is always 60°
Angle 3 = Angle 4 = 180° - 60° - 90° = 30°
