Geometryeasy · Past Paper
The angle subtended by an arc at the center of a circle is 80 degrees. What is the angle subtended by the same arc at any point on the remaining part of the circle?
A40 degrees
B80 degrees
C160 degrees
D20 degrees
✓ Correct Answer: A — 40 degrees
The angle at the center is double the angle at the circumference subtended by the same arc.
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