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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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EXAMPLE SENTENCES FROM THE WEB

To construct a regular pentagon, we find it convenient first to construct a regular decagon.
Below the arches are the chapels which surround the decagon in symmetrical fashion.
The plan of the church was a decagon, within which six composite columns in the centre supported six semi-circular vaults.
OLD AND NEW LONDONWALTER THORNBURY
In the fourth are six triangles, in the fifth, five polygons from a pentagon to a decagon.
THE MONTESSORI METHODMARIA MONTESSORI
Decagon, dek′a-gon, n. a plane figure of ten angles and sides.
The purpose of this problem is to prepare for the construction of the regular decagon and pentagon.
THE TEACHING OF GEOMETRYDAVID EUGENE SMITH
The solution is required later on in the construction of a regular decagon.
They are not circular, but form the sides of an irregular decagon.
DIKES AND DITCHESOLIVER OPTIC

WORDS RELATED TO DECAGON

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD OF THE DAY

derring-donoun | [der-ing-doo ]SEE DEFINITION