# chapter 10 vocab

### 13 terms by tim_gassaway

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### Circumscribed Circle

Circle that contains vertices of an inscribed polygon

### Secant Segment

A segment that contains a chord of a circle, and has exactly one endpoint outside of that circle

### Secant line

Line that intersects at circle at two points

### Congruent arcs

Two arcs with the same measure and are arcs of the same circle or congruent circles

Segment with an endpoint at the center of the circle and at a point on the circle.

### Tangent Line

A line that intersects a circle in exactly one point, the point of tangency

### Chord

A segment with endpoints that are on the circle

### Central Angle

the vertex of this angle is the center of the circle

### Semicircle

An arc whose endpoints are the endpoints of a diameter of the circle

### Diameter

The distance across a circle, through its center. a chord that goes through the center of the circle.

### Intercepted Arc

The arc that lies in the interior of an inscribed angle and has endpoints on the angle

### External Segment

The part of the secant segment that is outside the circle

### Circle

The set of all points in a plane that are equidistant from a given point, the center.

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