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Lesson 11.1 Parts of a Circle

Lesson 11.1 Parts of a Circle. Pages 589 - 590. Parts of a Circle. A chord is a segment whose endpoints are points on a circle. A diameter is a chord that passes through the center of the circle. A radius is a segment whose endpoints are the center of a circle and a point on the circle.

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Lesson 11.1 Parts of a Circle

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  1. Lesson 11.1 Parts of a Circle Pages 589 - 590

  2. Parts of a Circle • A chord is a segment whose endpoints are points on a circle. • A diameter is a chord that passes through the center of the circle. • A radius is a segment whose endpoints are the center of a circle and a point on the circle.

  3. Parts of a Circle • A secant is a line that intersects the circle in two points. • A tangent is a line in the plane of a circle that intersects the circle in exactly one point. • A point of tangency is the point where a tangent line intersects the circle.

  4. Identify the special segments and lines. • AD • EG • HB • JK • F • AC J B A K C H D E G F

  5. Identify the following: B K J • Chord: • Tangent • Radius • Center of circle • Point of tangency • Diameter • Secant A E C H F

  6. Coordinate Circles • Name the coordinates of the center of each circle • Name the coordinates of the intersection of the two circles • What line is tangent to both circles? • Name the coordinates of the point of tangency • What is the length of the diameter of circle B? What is the length of the radius of circle A?

  7. Assignment: 11.1 pages 591 - 593 #2-48 even

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