May 18, 2015

Teacher and Student versions of full lesson from engageNY, Circle similarity is last topic.

Define the angle measure of arcs, and understand that arcs of equal angle measure are similar.

Restate and understand the inscribed angle theorem in terms of arcs: The measure of an inscribed angle is half the angle measure of its intercepted arc.

Explain and understand that all circles are similar.

- Mathematics > General
- Mathematics > Geometry

- Grade 9
- Grade 10

Reason abstractly and quantitatively.

Construct viable arguments and critique the reasoning of others.

Attend to precision.

Look for and make use of structure.

Prove that all circles are similar.