Angle at Center
Change the angle at center and the subtending arc.
Angle at Center
Angle at circumference
Compare the marked angles. When is one greater / smaller than the other?
Angle at circumference
mark equal angles
How can you make the angle at D the same size as the angle at B?
mark equal angles
exploring tangent-chord angle
Exploring tangent-chord angle
exploring tangent-chord angle
explain difference in angles with circle
Explain how θ is greater or smaller than the angle on circumference subtended by the same arc.
explain difference in angles with circle
equidistant from 2 points
equidistant from two points
equidistant from 2 points
Annulus
Find the area of the annulus (purple ring) based on the given the chord length of CD.
Annulus
circular 9 dots template
seeing tangent and chord from an alternate angle
discussion about teaching tangent-chord angle theorem
Link to Google Doc [br][[url=https://docs.google.com/document/d/1yGEBZkK5cL_9S8yYMFqRuwO35XImZPqFp5unXPQlhSw/edit?usp=sharing]https://docs.google.com/document/d/1yGEBZkK5cL_9S8yYMFqRuwO35XImZPqFp5unXPQlhSw/edit?usp=sharing[/url]]