Geometrymedium · Past Paper
A line segment joining (1, 1) and (5, 5) is a diameter of a circle. What is its center?
A(3, 3)
B(2, 2)
C(4, 4)
D(6, 6)
✓ Correct Answer: A — (3, 3)
Center is the midpoint of the diameter: ((1+5)/2, (1+5)/2) = (3, 3).
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