Warming up!

Theo Jansen is the man who reinvented the wheel by constructing "strandbeests" as seen here on TED.

Construct a GeoGebra Strandbeest ↓

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...or just make some polygons ↓

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... or find points in triangles

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Start with two triangles. Use some tools (which tools?) to do this ↑

The blue intersectionspoints are not the same in the two different cases.

 

by Malin Christersson under a Creative Commons Attribution-Noncommercial-Share Alike 2.5 Sweden License