Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:

$\{ x:x$ is a triangle in a plane $\}  \ldots \{ x:x$ is a rectangle in the plane $\} $

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$\{ x:x$ is a triangle in a plane $\}  \not\subset \{ x:x$ is a rectangle in the plane $\} $

Similar Questions

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