"Algebras (jabbre and maqabeleh) are geometric facts which are proved by propositions five and six of Book two of Elements."

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The fun little proofs that you can do with algebra - they are sort of like crowd pleasers in a way. Like, the .9 repeating equaling one. It doesn't take a lot of algebra to prove that, and it's really fun. It kind of wows people. It's like they're watching magic happen right before their eyes.

— Danica McKellar