The Greedy Triangle

Ranked #2 in Geometry, Ranked #10 in Mathsee more rankings.

In this lively introduction to shapes and polygons, a bored triangle is turned into a quadrilateral after a visit to the shapeshifter. Delighted with his new career opportunities--as a TV screen and a picture frame--he decides the more angles the better, until an accident teaches him a lesson. Includes special teaching section. Full color. less

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