Based on the inscribed angle theorem, the measure of the inscribed angle is: C. 20 degrees.
What is the Inscribed Angle Theorem?
According to the inscribed angle theorem, it states that, the measure of inscribed angle in a circle equals half the measure of the arc it intercepted.
Therefore, we would have:
Measure of intercepted arc = 40 degrees
Measure of inscribed angle = 1/2(40)
Measure of inscribed angle = 20 degrees.
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