Forms

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Showing different types of forms or shapes: rectangle, right triangle, acute triangle, and obtuse triangle.

Keywords

geometry, shapes, rectangle, Right Triangle, acute triangle, obtuse triangle, forms, types of triangles

Galleries

General Geometric Illustrations

Source

Ellsworth D. Foster ed. The American Educator (vol. 3) (Chicago, IL: Ralph Durham Company, 1921)

Downloads

TIFF (full resolution)

2400×536, 131.5 KiB

Large GIF

1024×228, 19.7 KiB

Medium GIF

640×142, 10.7 KiB

Small GIF

320×71, 4.8 KiB