In geometry what is the difference between a definition and a postulate?

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- Sep 28th 2008, 04:15 PMIDontunderstandPostulates vs Definitions
In geometry what is the difference between a definition and a postulate?

- Sep 28th 2008, 04:47 PMPlato
This is I will admit is a very confusing topic.

How technical do you want the answer to be?

I prefer to use the word**axiom**in place of postulate.

Here is a naïve answer.

**Definitions**are the ‘building blocks’ of axiomatic systems.

**Axioms**are the__rules__by which the definitions are used.