1. If m∠5 = 115 degrees, find m∠1 = 115°
they form corresponding Angle pair.
2. If m∠7 = 30 degrees, find m∠2 = 30°
they form Alternate Exterior angle pair.
3. If m∠6 = 50 degrees, find m∠4 = 50°
they form Alternate interior Angle pair
4. If m∠4 = 72 degrees, find m∠1 = 180° - 72°
so, m∠1 = 108°
because, they form linear pair.