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    Review circle relationships as you answer the questions below. Homework Help ✎

  1. On your paper, draw a diagram of with . If and the length of the radius of is , what is the length of chord ?

    What do you notice about and ?

    How can trigonometry help you solve for ?

  2. Now draw a diagram of a circle with two chords, and , that intersect at point . If , , and , what is ?

    HWH diagram

    Remember that intersecting chords create similar
    triangles, and that the corresponding sides of similar
    triangles have equal ratios.