A great reference for students finding unknown arc and angle measures using circle theorems.
This foldable organizes arc and angle relationships by the location of the vertex. It includes the following four types:
Vertex on center (Central Angle)
Vertex on circle (Inscribed Angle)
Vertex inside Circle
Vertex outside Circle
Formulas are included for each one. Examples include tangents, secants, chords, and radii. Students work out four problems and write the answers under the fold. They can quiz themselves later.
Need help with this topic? Try the “Flashlight Method!” Students highlight the angles and arcs involved in the problem to help them focus on the measurements needed in the formulas.
Fold along the dotted line. No cutting is required for this foldable. Punch holes and it can be placed in a three ring binder if needed.