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147 points

It’s better known by its stage name, diamond.

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27 points

A square is a rectangle, but a rectangle isn’t necessarily a square

Same with rhombus and diamond

A rhombus is a diamond, but a diamond isn’t necessarily a rhombus

Rhombus has to have four equal sides, a diamond does not.

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12 points

I think most people would say a 2D shape that they’d call a diamond would have 4 equal sides.

I don’t think very many at all would call an elongated parallelogram a “diamond”.

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4 points

If I took a traditional diamond shape and elongated just the bottom sides.

I feel like most would call it a diamond still. Specific term would be a kite. Many wouldn’t come up with that, though. It’s not an elongated parallelogram. It is not a rhombus.

“Diamonds” on bicycle playing cards have curved edges. They are not a rhombus because sides are not parallel. Most agree that it’s the classic diamond shape, though.

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1 point

For me the shape I was thinking of was if you take a simplified 2D version of this 💎, with there being 4 sides, 2 pairs of equal sides but not 4 equal sides

I imagine what people are talking about here is this ♦️ sort of diamond.

I blame me not being a native speaker for thinking of diamon diamond

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4 points

In practice, diamonds have equal sides.

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17 points

In practice, diamonds are rocks.

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2 points

💎 what I’m thinking

♦️what I imagine is meant by diamond here

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2 points

Whut?

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10 points

Yeah, Shine on You Crazy Rhombus would never have been a hit.

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