WEBVTT
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Use is a subset of or not a subset of to fill in the gap: The Venn diagram shows that 𝑍 blank 𝑋.
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This sideways U is a symbol to tell us that something is a subset of something else.
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You could think of it as something being contained in something else.
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The other symbol the sideways U with the slash through it represents the statement it is not a subset of or it is not contained in.
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In our statement, the Venn diagram shows that 𝑍 blank 𝑋.
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We have to answer the question, is 𝑍 a subset of 𝑋?
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Is 𝑍 contained in 𝑋?
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The subset 𝑍 is located in the red circle.
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But the entire red circle is inside the green square.
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And that tells us that everything in 𝑍 is contained in 𝑋.
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That makes 𝑍 a subset of 𝑋.
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We can fill in the gap with the subset symbol: 𝑍 is a subset of 𝑋.