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Subsections

- Circle with center through point
- Circle with center and radius
- Circle through three points
- Conic through 5 points

## Conic Section

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Circle with center through point

Marking a point M and a point P defines a circle with center M through P. This circle's radius is the distance MP.

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Circle with center and radius

After marking the center point M you are asked for the radius in a window.

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Circle through three points

Marking three points A, B, C defines a circle through these points. If the tree points lie on one straight line, the circle degenerates to this line.

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Conic through 5 points

Marking five points produces a conic section through them. If no four of these five points lie on a line, the conic section is defined.