Ch10: Circles Vocabulary

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14 Terms

1
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<p>circle</p>

circle

shape consisting of all points in a plane that are a given distance from the center

2
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<p>radius</p>

radius

a distance from the center of the circle to the outside (1/2d)

3
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<p>diameter</p>

diameter

line that passes through the center and meets the circumference on opposite ends (2r)

4
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<p>concentric circles</p>

concentric circles

circles that have the same center, but have different radii

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<p>interior of a circle </p>

interior of a circle

inside of a circle

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<p>exterior of a circle</p>

exterior of a circle

outside of a circle

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<p>secant</p>

secant

line that intersects a curve at a minimum of 2 distinct points

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<p>tangent</p>

tangent

circles in a common plane that intersect at a single point

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<p>central angle</p>

central angle

an angle whose vertex is at the center of a circle

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<p>measure of an arc</p>

measure of an arc

equivalent to the measure of the central angle

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<p>length of an arc</p>

length of an arc

distance from A to B along the circle (mAB/360 x C)

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<p>minor arc</p>

minor arc

0 < AB < 180

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<p>major arc</p>

major arc

180 < ACB < 360

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<p>semicircle </p>

semicircle

AB = 180