### Possible Answer

A circle is a plane figure bounded by one line, and such that all right lines drawn from a certain point within it to the bounding line, are equal. - read more

Thales' theorem may be used to construct the tangent lines to a point P external to the circle C. A circle is drawn centered on Q, the midpoint of the line segment OP ... - read more

Please vote if the answer you were given helped you or not, thats the best way to improve our algorithm. You can also submit an answer or search documents about segments that are tangents to a circle from the same external point are equal in length.