9. Which of the following is used to inscribe a square in a circle? А. Copy the chord that runs through the center of the circle. В. Construct a perpendicular bisector of the diameter of the circle. С. Use the radius length to find four vertices inscribed on the circle. D. Construct a right angle using the radius of the circle and a tangent line.

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Q: (b) Prove that the perpendicular bisector of a chord of a circle passes through the centre.

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A: Draw three non-collinear points R, S, and T.

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Q: 11.9 12.1 12.9 8.

A: The answer is 48  The detailed solution is as follows below:

Q: 5 cm -- -- ----

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