geometry section 10 1 segments and lines of circles n.
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Geometry Section 10.1 Segments and Lines of Circles - PowerPoint PPT Presentation


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Geometry Section 10.1 Segments and Lines of Circles. A * circle is a set of points, in a plane, that are equidistant from a given point.

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Presentation Transcript
slide3

This given point is called the ______of the circle. A circle can be named by using the symbol _____ and naming the center of the circle. The circle to the right is _____.

center

a radius plural radii is a
A *radius (plural: radii) is a

segment from the center to any point on the circle.

EXAMPLE : HI

a diameter is a chord which
A *diameteris a chord which

passes through the center of the circle.

note the length of a diameter equals
Note: The length of a diameter equals

2 times the length of a radius.

Name the Diameter: MC

slide10

A *secant to a circleis a line which intersects the circle in 2 points.Note: Every secant will contain a chord. Be sure to include the proper symbol for a segment or line when naming chords or secants.

slide11

Secant

Tangent

Secants are LINES.

Chords are SEGMENTS.

slide12
A *tangent to a circleis a line, in the plane of the circle, that intersects the circle in exactly one point.

The word TANGENT means one intersection.