GoGeometry Action 168!
Creation of this resource was inspired by a problem posted by Antonio Gutierrez.
You can move the 2 LARGE WHITE POINTS anywhere you'd like at any time.
Key Questions:
1) How do we know the octagon shown is a regular octagon? Explain.
2) Suppose each side of the octagon has length a. How can we write the length of the purple segment as a
function of a? That is, how can we write the length of the purple segment in terms of a?
3) How can we formally prove the phenomenon dynamically illustrated here?