# geometry 10.2/3

### 21 terms by brandylynn94

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### central angle

an angle whose vertex is the center of the circle.

### minor arc

part of a circle that measures less than 180 degrees

### major arc

part of a circle that measures between 180 degrees and 360 degrees

### semicircle

an arc whose endpoints are half the circle; endpoints are the diameter of the circle.

### congruent arcs

2 arcs of the same circle or of congruent circles that have the same measure.

### inscribed angle

and whose vertex is on a circle and whose sides contain chords of the circle

### interepted arc

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

### inscribed polygon

polygon whose vertices all lie on a circle.

### circumscribed circle

circle with an inscribed polygon

### circle

set of all points in a plane that are equidistant from a given point

distance from the center of a circle to a point on the circle

### congruent circles

2 circles that have the same radius

### diameter

chord that passes through the center of a circle

### chord

segment whose endpoints are points on the circle

### secant

segment that intersects a circle twice.

### tangent circles

circles that intersect in one point

### concentric

circles that have a common center

### common tangent

a line or segment that is tangent to 2 circles

### interior of a circle

all points of the plane that are inside a circle

### exterior of a circle

all points of the same plane that are outside a circle

### point of tangency

point where tangent line meets circle line

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