7. What is the sum of m∠5, m∠9, and m∠8?
A. 22°
B. 75°
C. 90°
D. 180°
8. If m∠15 + m∠16 = 110°, what is the measure of ∠12?
A. 110°
B. 70°
C. 31°
D. 43°
9. If m∠4 = 75°, what is the measure of ∠6?
A. 15°
B. 75°
C. 105°
D. 165°
10. If m∠12 = 65° and m∠13 = (3x – 8)°, what is the measure of ∠13?
A. 41°
B. 65°
C. 115
D. 25°​​