What is the definition of a rectangle in geometry?

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Definition of Geometry Shape and Branch of Mathematics that Deals with Points, Lines, Angles, Surfaces, and Solids on White Backgr Stock Vector - Illustration of cone, collection: 132642101

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What are the similarities and differences of rectangles and parallelograms?

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By definition of a rectangle, you can classify the polygon as a. regular, concave b. irregular, concave c. regular, convex d. irregular, convex