A pseudotriangle. Or a you looking for the size of the area?

Maybe the one guy was just telling the story of how he overheard someone with a ping pong paddle saying RAGARAGARAGARAGARAGARAGA

If ^L is invisible in your editor, you’re using a bad editor.

Not saying page feeds are useful, but you can’t complain that you don’t see them.

The acetyl group (-COCH₃) is not acidic itself. The amino acid has both an acidic -COOH group and a basic primary amine (-NH₂) group, but in the compound the primary amine becomes a secondary amine (-NH-), who basicity will depend on surrounding atoms. (If you look at a structural diagram of the compound, the only hydrogen atom it can realistically lose to have acidity is on the -COOH.)

Just to be pedantic, the acidity doesn’t come from the acetyl group - - it comes from the tyrosine, an amino acid.

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By that measure, Lego is probably also the biggest producer of windshields, wigs, doors, windows, etc.