#MathArtChallenge Day 52: Crossing Lines

The Challenge: Drawing only straight lines where all lines must cross all other lines, how many can you draw?

Materials needed: Paper, pencil, maybe a ruler.

(As I allude to with my warning -mostly for twitter folk- there is an optimal solution for this, and it’s very satisfying if you can find it on your own. If you’re struggling comment below and I can give you some hints.)

Author: Annie Perkins

Math Teacher in Minneapolis, MN.

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