State in each case whether A ⊂ B or A ⊄ B.

Question:

State in each case whether A ⊂ B or A ⊄ B.

A = {x : x is a square in a plane}, B = {x : x is a rectangle in the same plane}

 

Solution:

A ⊂ B

Explanation: Set of squares is a subset of set of rectangles since all squares are rectangles.

 

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