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Point B is the center of a circle, and AC is a diameter of the circle. Point D is a point on the circle different from A and C. If angle BDA = 20 degrees, then what is the measure of angle CBD?

Answer choices:
a) 70 degrees
b) 120 degrees
c) 140 degrees
d) 40 degrees

User TheJeff
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Answer:b

Explanation:

User Soumyaansh
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