Thumper's star-drawing technique

Thumper: Mum. how do you draw a star again?
Me: Well one way is to do two triangles, one over the top of the other...
Thumper: No. I'm going to do a hexagon...
She draws a five-sided hexagon (otherwise known as a pentagon).
Thumper: Then you do this...
She adds a small triangle to each side of the pentagon and voilà - a star!

I can't help but think that's a little bit clever.
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