decagon

Example Sentences

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Most of the list came from the state eighth grade curriculum: barometer, decagon, perpendicular .

From "Schooled" by Gordon Korman

The rotunda, or decagon, so reminiscent of Aix-la-Chapelle, dates from a period contemporary therewith, so far as its lower walls are concerned, but the upper portions are of the twelfth century, at least.

From The Cathedrals and Churches of the Rhine by Mansfield, M. F. (Milburg Francisco)

They are not circular, but form the sides of an irregular decagon.

From Dikes and Ditches Young America in Holland and Belguim by Optic, Oliver

If then the bisected chord be a side of the decagon, and if the radius be still 1280, the double of the lesser segment exceeds 125.

From A Budget of Paradoxes, Volume II by Smith, David Eugene

This side being known the decagon can be constructed, and if the vertices are joined alternately, leaving out half their number, we obtain the regular pentagon.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various