Geometry Glossary

center of a regular polygon:	The common center of its inscribed and circumscribed circles.
central angle:	An angle whose vertex is the center of the circle.
chord:	A segment within a circle with endpoints on the circle.
circle:	The set of all points in a plane that are a given distance from a fixed point in that plane.
circumcenter:	The intersection of perpendicular bisectors of sides of a triangle.
circumscribed circle:	A circle in which a polygon is inscribed.
circumscribed polygon:	A polygon whose sides are tangent to a circle.
collinear:	Points contained within the same line.
complementary angles:	Two angles whose sum of their measures is 90.
concentric circles:	Coplanar circles of different radii with a common center.
concurrent lines:	Lines that converge, or intersect, in one common point.
conditional:	A statement that can be written in the form "If P, then Q."
cone:	A pyramid-like object whose base is a circle and whose lateral surface is made up of an infinite number of segments between the circle and a vertex.
congruent angles:	Angles that have the same measure.
congruent arcs:	Arcs that have the same degree measure.
congruent circles:	Circles that have congruent radii.
congruent quadrilaterals:	Quadrilaterals with congruent corresponding sides.
congruent segments:	Segments that have the same length.
congruent triangles:	Triangle with congruent, corresponding sides and angles.
conjunction:	If p and q are both statements, the statement "p and q" is their conjunction.
converse:	The statement formed by interchanging the hypothesis and conclusion of a conditional.
convex:	A polygon is convex if a segment joining any two interior points of the polygon is in the interior of the polygon.
coordinates:	A corresponding ordered pair (x,y) for every point in a plane.
coplanar:	Points within the same plane.
corollary:	A theorem whose proof follows from another theorem in a few steps.
corresponding angles:	Angles which lie on the same side of a transversal.
cylinder:	A cylinder consists of two congruent and parallel circular bases whose lateral surface is the infinite number of segments connecting the circles.

Note: The terms in this collection may not be entirely accurate.
They are for reference only.

Geometry Glossary - C a|b|c|d|e|g|h|i|k|l|m|o|p|q|r|s|t|v|x|y|

Geometry Glossary - C
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