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To compare, they both have a set of parellel sides and they each have four sides t its shape. To contrast, a trapezoid only has two sides with the same length, while a parellelogram has two sets of equal sides. * * * * * A trapezoid need not have any sides of equal length: only an isosceles one does. For a very crude graphic, see below (ignoring the dots that are just for spacing): ______ |...........\ |______\
The traditional heart shape has curved sides, so it is not a true polygon.
Compare the number of sides and angles. Compare the types of angles. Compare the number of parallel lines.
To be accurate, an analogy must compare two things that are alike. For example, an analogy could compare the heart to a pump because they are both the same general thing.
If two objects have the same shape, they are called "similar." When two figures are similar, the ratios of the lengths of their corresponding sides are equal. To determine if the triangles shown are similar, compare their corresponding sides.