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At a Glance

The area of a regular pentagon looks about twice as a big as the pentangle star drawn within it. Is it?

Darts and Kites

Explore the geometry of these dart and kite shapes!

No Right Angle Here

Prove that the internal angle bisectors of a triangle will never be perpendicular to each other.

Logo Challenge 3 - Star Square

Age 7 to 16 Challenge Level:
Here are two ideas for designs based on squares which you might like to create.
Sqaures in a circle

More squares in a circle

A very elegant solution could invovle "nested" REPEATS, that is the REPEAT you use to draw the square inside a REPEAT to draw several squares.

How about other designs based on squares that use "nested" REPEATs.