Definition

A point where two or more lines meet, or the highest point of something, such as a shape or an angle.

Example

In geometry, the vertex of a triangle is where two sides meet.

Conversation

Did you learn about the vertex in geometry class today?

Yeah, we talked about how it's where the angles meet.

I find it fascinating that the vertex can change the shape of a polygon.

Totally! It’s amazing how just one point can make such a difference.

Synonyms & Antonyms

Root Explanation

Vertex → It is formed from "vertere" (meaning to turn) and the suffix "-ex" (meaning out of or from). The word "vertex" originally referred to the highest point or the point where something turns or changes direction, like the peak of a mountain.

Memory Tip

Think of the word 'turning' ('vertere') to remember that a vertex is the point where lines or edges meet, often at the highest point.

Visually Confused Words