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Question

Given, $A = {$ Quadrilaterals $}$ , $B = {$ Rectangles $}$ , $C = {$ Squares $}$ , $D = {$ Rhombuses $}$ . State whether the following statement is correct or incorrect. Give reasons.
$D$ $\subset$ $A$

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Solution

$A = {$ Quadrilaterals $}$
$B = {$ Rectangles $}$
$C = {$ Squares $}$
$D = {$ Rhombuses $}$
Yes, $D \subset A$ [ $∵$ Rhombuses are Quadrilaterals but all quadrilaterals are not Rhombuses..]

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Give reasons for the following:

(a) A square can be thought of as a special rectangle.

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(d) Squares, rectangles, parallelograms are all quadrilaterals.

(e) Square is also a parallelogram.

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