180 Days of Ideas for Discussion in Math Class. (as of 9July2014, we're in overtime!)

As the red square is rotated around point O, what is the area of the overlap with the yellow square? #geomchat — David Wees (@davidwees)

We tweeted this in response:https://twitter.com/CCSSIMath/status/604406687957671936

Very nice.The problem reminds me of another:Suppose a rectangular cake has a single rectangular piece removed. Divide the remaining cake into two equal pieces with a single cut.(Cutting the cake "horizontally" through the middle gives one solution; but there is another!)http://i.imgur.com/kESHfgf.jpg

We tweeted this in response:

ReplyDeletehttps://twitter.com/CCSSIMath/status/604406687957671936

Very nice.

DeleteThe problem reminds me of another:

Suppose a rectangular cake has a single rectangular piece removed. Divide the remaining cake into two equal pieces with a single cut.

(Cutting the cake "horizontally" through the middle gives one solution; but there is another!)

http://i.imgur.com/kESHfgf.jpg