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www.reference.com/article/names-shapes-934d9f003e9f7bad

Some commonly-known shapes are squares, circles, triangles, stars and rectangles. There are many different kinds of polygons used in geometry and many shapes that combine or arrange multiple polygons to be used in designs.

www.reference.com/article/3-d-shapes-32d074b932f3987b

Three-dimensional shapes are solid shapes that exist in three dimensions, which include length, width and depth. The main difference between 3-D shapes and 1-D or 2-D shapes is that depth is incorporated along a third axis outside of the original 2-D plane.

www.reference.com/article/shape-sun-91e357b92294e7b5

The sun is almost a perfectly round sphere. The sun is the one of the roundest natural objects ever measured, according to scientists at the University of Hawaii.

www.reference.com/article/shape-euglena-1766135c2342de4a

The shape of Euglena resembles an elongated or spindle-shaped cell that is 15 to 500 micrometers, or 0.0006 to 0.02 inches, in length. Some species can change their shape as they lack a rigid cellulose wall, and instead have a flexible pellicle.

www.reference.com/article/composite-shape-f3cd8a2c90b96db0

A composite shape, also called a composite figure, is a geometric shape constructed from two or more geometric figures. A few examples of shape combinations that can be made to form composite shapes include triangles and rectangles, triangles and squares, squares and re...

www.reference.com/article/shapes-bacteria-61f3258a3433b69f

There are five primary shapes of bacteria found in nature: coccus, spirillum, vibria, bacillus and spirachaetes. These shapes can be found in a variety of configurations that help identify the bacterial species.

www.reference.com/article/shape-stop-sign-db595f230b18ab76

A stop sign is octagonal in shape. Octagons and red are the two clearest indicators that a driver should stop at a sign.