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# Howard Geometry 11

### Chapter 11 Geometry Vocabulary

TermDefinition
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.
Created by: Brit Howard