Geometry Unit 8 Lesson 2 (12/2)

Lesson 2: Equations of circles, arcs and chords.

SOL:  Standard G.11

The student will use angles, arcs, chords, tangents, and secants to

a)   investigate, verify, and apply properties of circles;

b)   solve real-world problems involving properties of circles; and

c)   find arc lengths and areas of sectors in circles.

Standard G.12

The student, given the coordinates of the center of a circle and a point on the circle, will write the equation of the circle.

Learning Objectives:

The Student Will Be Able To:

  1. Recognize and use relationships between arcs and chords.
  2. Recognize and use relationships between arcs, chords, and diameters.
  3. Write the equation of a circle.
  4. Graph a circle in the coordinate plane.


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