# equilateral

[ee-kwuh-lat-er-uh l, ek-wuh-]

- having all the sides equal: an equilateral triangle.

- a figure having all its sides equal.
- a side equivalent, or equal, to others.

## Origin of equilateral^{}

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for equilateral

### Contemporary Examples

### Historical Examples

#### These are the equilateral triangle, the square and the regular hexagon.

Langstroth on the Hive and the Honey-BeeL. L. Langstroth

#### Are you aware, Mr Gascoigne, of the properties of an equilateral triangle?

Mr. Midshipman EasyCaptain Frederick Marryat

#### These are the equilateral triangle, the square, and the regular hexagon.

Animal IntelligenceGeorge J. Romanes

#### Form of the outer shell not a sphere, but a regular octahedron, with eight congruent, equilateral triangular even faces.

#### Marginal spines ten to twelve, equilateral triangular, deeply sulcated, about half as long and broad as the radius of the disk.

# equilateral

- having all sides of equal lengthan equilateral triangle

- a geometric figure having all its sides of equal length
- a side that is equal in length to other sides

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Word Origin and History for equilateral

Online Etymology Dictionary, © 2010 Douglas Harper

# equilateral

[ē′kwə-lăt′ər-əl]

- Having all sides of equal length, as a triangle that is neither scalene nor isosceles.

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.