Definition

Describing points or lines that are on the same straight line or share a common line.

Example

The three points A, B, and C are collinear because they all lie on the same straight line.

Conversation

Did you notice how those points on the graph are collinear?

Yeah, it makes it so easy to understand the trend.

I find it fascinating how geometry works in real life.

Absolutely! It’s amazing how collinear points can simplify calculations.

Synonyms & Antonyms

Root Explanation

Collinear → It is formed from "co-" (meaning together) and "linea" (from Latin, meaning line). The word "collinear" describes points that lie on the same line, hence together on a line.

Memory Tip

Think of points that are 'together' ('co-') on a 'line' ('linea') — that's what collinear means.

Visually Confused Words