What is the name of the shape formed by a semicircle attached to a rectangle?

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I will be asking several questions like this. I have to figure out the names of the shapes of numerous parts that we make. I have looked, but the internet has failed me for several shapes. Here's the first one:

It's basically a rectangle with a semicircle on top of it. Don't know if it would have a different name if it was a square instead of a rectangle, but it really doesn't matter.

Thank you very much for all your help and all your help to come for my other shape questions.

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2 Answers

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there is a shape called a stadium. you could call this shape a half stadium.

Wikipedia link to the stadium shape(geometry)#:~:text=A%20stadium%20is%20a%20two,%2C%20obround%2C%20or%20sausage%20body.

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I have made this reasoning: an eyelet consists of two semicircles and a rectangle (or two semirectangle), then a semicircle and a semirectangle will be called a semieyelet.

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