Rectangles

Shapes: Triangles (Concepts)

Esther Sarfatti

Wing on a Flea a Book About Shapes

Ed Emberley

Building Washington, D.C: Measuring the Area of Rectangular Spaces (Powermath)

Barbara M. Linde

A square? a rectangle!

Holly Karapetkova and J. Jean Robertson.

Green Lizards vs Red Rectangles: A Story about War and Peace

Steve Antony

Circles and Rectangles

Kay Robertson

The rectangle

Howard Goldsmith

Lü xi yi he hong fang kuai

wen tu Shidifu Andongni ; fan yi Liu Qingyan

Rectangulos

Diyan Leake.

Rectangles

Anita Loughrey