Unit 5 Vocabulary by Madison McGuire

Circle

mcguiremn909 — 2017-10-31 18:24:47 UTC

Definition:a closed plane curve consisting of all points at a given distance from a point within it called the center

Diameter

mcguiremn909 — 2017-10-31 18:24:54 UTC

Definition:a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Radius

mcguiremn909 — 2017-10-31 18:25:09 UTC

Definition:a circle or sphere is any of the line segments from its center to its perimeter

Tangent

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Definition:A tangent to a circle is perpendicular to the radius at the point of tangency.

Chord

mcguiremn909 — 2017-10-31 18:25:29 UTC

Definition:a segment that both endpoints are on the circle

Secant

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Definition:a straight line that cuts a curve in two or more parts.

Sector

mcguiremn909 — 2017-10-31 18:25:45 UTC

Definition:the plane figure enclosed by two radii of a circle or ellipse and the arc between them.

Arc

mcguiremn909 — 2017-10-31 18:25:53 UTC

Definition:part of a circle consisting of 2 points on the circle and the unbroken part of the circle between the 2 points

Minor Arc

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Definition:an arc intercepted by a central angle, lies in the interior of the angle (<180)

Major Arc

mcguiremn909 — 2017-10-31 18:26:10 UTC

Definition:arc that >180

Semicircle

mcguiremn909 — 2017-10-31 18:26:20 UTC

Definition: Half a circle

Central Angle

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Definition:A central angle is an angle with endpoints and located on a circle's circumference and vertex located at the circle's center

Inscribed Angle

mcguiremn909 — 2017-10-31 18:26:39 UTC

Definition:is an angle formed by two chords in a circle which have a common endpoint.

Circumference of a circle

mcguiremn909 — 2017-10-31 18:31:16 UTC

Formula:C=2πr

standard form of the equation of a circle

mcguiremn909 — 2017-10-31 18:33:10 UTC

Formula:(x – h)² + (y – k)² = r²

arc length

mcguiremn909 — 2017-10-31 18:33:17 UTC

Definition:the distance along the arc part of circumference of a circle or of a circle or of any curve

area of a sector

mcguiremn909 — 2017-10-31 18:33:25 UTC

Formula: ½ r²

area of a circle

mcguiremn909 — 2017-10-31 18:35:23 UTC

Formula:A=πr^2