Notes
Summary: Maths skills are exercised in the reading of this story. When a bored triangle is changed into another shape by the local shapeshifter and becomes a quadrilateral, he becomes greedy and keeps adding angles until he is completely transformed.
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. ...