Finding the Center of a Circle
(This demonstration shows how to find the center of a circle using only a compass and straightedge)
Step by Step Instructions
- Using a straightedge, draw any two chords of the circle. For greatest accuracy, avoid chords that are nearly parallel.
- Construct the perpendicular bisector of one of the chords using the method described in "constructing a perpendicular bisector of a line segment".
- Repeat same drawing for the other chord.
- The point where the two lines intersect is the center of the circle.
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