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Howard Geometry 11
Chapter 11 Geometry Vocabulary
Term | Definition |
---|---|
Chord | A segment whose endpoints are points on a circle |
Secant | A line that intersects a circle in two points |
Tangent | A line in the plane of a circle that intersects the circle in exactly one point |
Point of Tangency | The point where the tangent line intersects the circle |
Tangent Segment | A segment in the plane of a circle that intersects the circle in exactly one point |
Minor Arc | Written by using two points and an arc symbol above; it is smaller than a semicircle. |
Major Arc | Written by using three points and an arc symbol above; it is larger than a semicircle. |
Measure of a Minor Arc | Less than 180 degrees. |
Measure of a Major Arc | Greater than 180 degrees. |
Semicircle | The arc whose endpoints are a diameter; its measure is exactly 180 degrees |
Congruent Circles | Two circles with the same radius. |
Arc Length | A portion of the circumference of a circle. |
Inscribed Angle | An angle whose vertex is on a circle and whose sides contain chords of the circle |
Intercepted Arc | The arc that lies in the interior of an inscribed angle and has endpoints on the angle. |
Central Angle | An angle whose vertex is at the center of a circle and whose sides are radii |
Inscribed Polygon | A polygon whose vertices lie on a circle |
Circumscribed | To draw a circle around a polygon such that the circle intersects all vertices of the polygon. |
Vertex | The point where two sides of a polygon or angle intersect |
Measure of a Semicircle | Exactly 180 degrees. |