Answer:
1-9) Refer to growingpains' answer
Step-by-step explanation:
1-9) The measure of the central angle and intercepted arc are equal.
10) Subtended angle.
line seg SI = line seg SN since both are radii
∠PSN = 180°
∠NSR = 180°-∠ISR-∠ISP
∠NSR = 180-52-48
∠NSR = 80°
∠ISN = ∠ISR+∠NSR
∠ISN = 52+80
∠ISN = 132°
∠ISN = 2•∠ITN --->(Theorem 1)
132 = 2•∠ITN
∠ITN = 132/2
∠ITN = 66°
