🔺 All sides equal 🔷 A shape with equal sides

equilateral

6.0

A shape with all sides the same length

noun
/ˌiːkwɪˈlætərəl/

: figura equilátera

To construct an equilateral, make sure that each side measures exactly 5 cm.

Examples

In its original form, the polar complex began with three structures set at the vertices of an equilateral.

Fiction book (1997)
An equilateral has three sides, all of the same length.
In geometry class, we learned that a triangle is equilateral if all its sides are equal.

Compounds

equilateral triangle

1 3.2

A triangle with all three sides the same length

How Equal

regular polygon

Specialized

4.2

equilateral

6.0

Surface Forms

equilateral singular

equilaterals plural

Morphology

equilateral = lateral (transparent) = equi + lateral

The meaning is straightforwardly compositional: equi- means 'equal' and lateral refers to a side, yielding 'having equal sides'.

Etymology

Equilateral as a noun has the same origin: equi- 'equal' + lateral 'side', so an equilateral is a figure whose sides are all the same length.