Intermediate (B1)
IPA: /ˌiːkwɪˈlætərəl/
KK: /ˌiːkwɪˈlætərəl/
Definition
A term used to describe a shape where all sides or faces are of the same length or size.
Example
An equilateral triangle has three sides that are all the same length.
Conversation

Have you ever seen an equilateral triangle in real life?

Yeah, I remember making one in art class.

It's interesting how all the sides are equal in an equilateral shape.

Exactly! It makes them look so balanced and neat.
Synonyms & Antonyms
Antonyms
unequal
asymmetrical
irregular
Definition
A shape where all sides are the same length.
Example
An equilateral triangle has three sides that are all equal in length.
Conversation

Did you know that an equilateral triangle has all its sides equal?

Yeah, I learned that in math class recently!

It's interesting how simple shapes can have such unique properties, like the equilateral triangle.
Root Explanation
Equilateral → It is formed from "equi-" (meaning equal) and "latus" (meaning side). The word describes a shape where all sides are equal in length, such as in an equilateral triangle.
Memory Tip
Think of 'equal' ('equi-') sides when you picture an equilateral shape, where all sides are the same length.
Visually Confused Words
unequilateral
inequilateral
subequilateral
nonequilateral
unilateral
sesquialteral
quadrilateral
quinquelateral