Educational worksheet on the parts of a circle with definitions and illustrations.

A worksheet titled "Parts of a Circle Notes" with a table listing terms like Circle/Center, Radius, Chord, Diameter, Secant Line, Tangent Line/Point of Tangency, Arc, and Sector, each with a definition and a corresponding diagram.

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- Circle/Center of the Circle: Set of all points that are the same distance from the center point
- Radius: Line segment from the center to a point on the circle
- Chord: Line segment whose endpoints are on the circle
- Diameter: A chord that passes through the center of the circle
- Secant Line: A line that intersects the circle at two points
- Tangent Line/Point of Tangency: A line that touches the circle at exactly one point / Point where the tangent line touches
- Arc: Piece of the circumference of the circle (outside) *minor *major *semi-circle
- Sector: Piece of the interior of the circle

Parent Tip: Review the logic above to help your child master the concept of parts of a circle worksheet.

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