Unit 2 Day 5 Circle Vocabulary.

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Presentation transcript:

Unit 2 Day 5 Circle Vocabulary

In your groups look up the definitions for your vocabulary words In your groups look up the definitions for your vocabulary words. Use technology. Hint, to find the correct definition add “of a circle” to the end. Ex: “Chord of a circle”

Circle All points equidistant from a given point called the center

Semicircle Half of a circle (Arc of a circle that measures 180⁰)

Radius A segment from the center to a point of the circle *Note all radii of the same circle are congruent

Diameter A special chord that passes through the center

Chord A segment whose endpoints are on the circle

Secant A line which intersects the circle in two points

Tangent A line which intersects the circle in one and only one point

Arc A portion of the circumference of a circle Major Arc- Arc that measures greater than 180˚ Minor Arc- Arc that measures less than 180˚

Sector The interior formed by a central angle and its intercepted arc (“pie” shape)

Circle: Tangent: Chord: Major Arc: Radius: Minor Arc: Diameter: Label one of each using the picture given: Circle: Tangent: Chord: Major Arc: Radius: Minor Arc: Diameter: Semicircle: Secant: