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Chp 10 Vocab
| Term | Definition |
|---|---|
| Circle | is the locus or set of all points |
| Center | a given point in a circle which all other points are equidistant |
| radius | is a segment with endpoints at the center and on the circle |
| chord | a segment with endpoints on the circle |
| diameter | of a circle is a chord that passes through the center and is made up of collinear radii |
| Congruent circles | two circles that are the congruent if and only they have the same radius |
| concentric circles | are coplanar circles that have the same center |
| circumference | of a circle is the distance around the circle |
| pi | ratio c over d as an irrational number |
| inscribed | in a circle if all of a polygons vertices lie on the circle |
| circumscribed | a circle is circumscribed about a polygon if it contains all the vertices of the polygon |
| central angle | of a circle is an angle with a vertex in the center of the circle |
| arc | is a portion of a circle defined by two endpoints |
| minor arc | is the shortest arc connecting two endpoints on a circle |
| major arc | is the longest arc connecting two endpoints on a circle |
| semi circle | is an arc with endpoints that lie on a diameter |
| congruent arcs | are arcs in the same or congruent circles that have the same measure |
| Adjacent arcs | are arcs in a circle that have exactly one point in common |
| arc lenght | is the distance between the endpoints along an arc measured in linear units |
| inscribed angle | has a vertex on a circle and and sides that contain chords of the circle |
| intercepted arc | has endpoints on the sides of an inscribed angle and lies in the interior of the inscribed angle |
| Tangent | is a line in the same plane as a circle that intersects the circle at one point |
| point of tangency | the point that the tangent intersects |
| common tangent | is a line, ray, or segment that is a tangent to two circles in the same plane |
| secant | is a line that intersects at two points |
| chord segments | when two chords intersect inside a circle each chord is divided into two pieces |
| secant segment | is a segment of secant line that has exactly one end point on the circle |
| external secant segment | a secant segment lies in the exterior of the circle |
| tangent segment | segement of a tangent with one end point on the circle |
| compound locus | satisfies more than one distinct set of conditions |