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circle
vocabulary
Term | Definition |
---|---|
chord | a segment whose endpoint luie on a circle |
diameter | a chord that contains the center of a circle |
secant of a circle | a line that contains a chord |
tangent to a circle | a line that lies in the plane of a circle and that intersects the circle at exactly one point |
circle | the set of all points in a plane at a given distance from a given point in the plane |
radius | a segment from a point on a circle a sphere to the center |
congruent circles | circle with the same radius |
concentric circles | circles that lie in the same plane that share the same center |
inscribed angle | angle whose vertex lies on a circle and whose sides contain chords of the circle |
central angle | angle whose a vertex is the center of a circle and whose sides contain radii of the circle |
circumference | distance around a circle that is the perimeter of a circle |
arc length | a fraction of the circumference of a circle the arc |
arc of the circle | two point on the circle and the continuous part of the circle between the two points |
semicircle | an arc of a circle whose endpoint are the endpoints of a diameter |
minor arc | an arc of a circle whose length is less than the length of a semicircle of te circle |
major arc | an arc of a circle whose length is greater than the length of a semicircle of the circle |