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0 votes
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in Mathematics by (8.0k points)

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

(A) F2 ∩ F3 

(B) F3 ∩ F4

(C) F2 ∪ F5 

(D) F2 ∪ F3 ∪ F4 ∪ F1

1 Answer

+1 vote
by (13.2k points)
edited by
 
Best answer

Answer is D

Every rectangle, rhombus, square in a plane is a parallelogram but every trapezium is not a parallelogram.

F1 = F2 ∪ F3 ∪ F4 ∪ F1

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