Angles in a Circle

This Angles in a Circle lesson plan also includes:

This detailed lesson plan leads your students through an investigation of the relationships between central, inscribed, and circumscribed angles of a circle. The opening activity reviews central and inscribed angles and their intercepted arcs by having learners create problems for a partner to solve. After discussing their solutions, learners work in small groups to complete a worksheet that contains five diagrams showing circles with angles formed by radii, chords, diameters, secants, and tangents. Referring to a list of possible description options, pupils determine the exact figures that form each angle, measure the angle with a protractor, then interpret the result in relation to the measures of the central angle and intercepted arcs.

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CCSS: Designed

  • Worksheet and reference sheet lend to good organization and easy implementation of lesson
  • Contains link to UDL checklist for teacher reference

  • Does not include answer key to worksheet activity
  • Does not include practice problems to reinforce concepts, teacher must provide
Common Core