|A proof which assumes that the desired conclusion is not true and shows that this assumption leads to a contradiction.|
|Generalizations based on repeated observations.|
|An angle whose vertex lies on a circle and whose sides contain chords of the circle.|
|A circle about which a polygon is circumscribed.|
|A polygon whose sides are chords of a circle.|
|A set of points contained in two or more intersecting figures.|
|The arc TB is called the intercepted arc of inscribed angle ACB.|
|The statement formed by negating the hypothesis and the conclusion.|
|A transformation that is distancepreserving. The distance between two points is the same as the distance between the corresponding images of these points.|
|A trapezoid with congruent legs.|
|A triangle with at least two congruent sides.|
Note: The terms in this collection may not
be entirely accurate.
They are for reference only.