1.

Let F1 be the set of all parallelograms, F2 the set of all reactangles, F3 the set of all rhombuses, F4 the set of all sqauares and F5 the set of trapeziums in a plane. Then F1 may be equal to

Answer»

Let F1 be the set of all parallelograms, F2 the set of all reactangles, F3 the set of all rhombuses, F4 the set of all sqauares and F5 the set of trapeziums in a plane. Then F1 may be equal to




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