Answers:
s = 31
t = 62
u = 17
w = 31
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Step-by-step explanation:
Inscribed angles w and s subtend the same arc that the inscribed angle 31 degrees is doing. Therefore, angle w = angle s = 31 degrees.
Inscribed angles that subtend the same arc will be equal in measure.
Similarly, the 17 degree angle and angle u both subtend the same arc. This must mean angle u = 17 degrees.
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Use the inscribed angle theorem to determine the central angle t
angle t = 2*(inscribed angle w)
angle t = 2*(31)
angle t = 62 degrees