X = 21 this is the answers to your question
<span>If a quadrilateral has four congruent sides and four right angles, then it’s a square (reverse of the square definition).
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The 25% off is: $8.75
The 6% tax is: $2.1
Total:$24.15
A pound is 16 oz so if you add 16 plus 5 it equals 21<span />
Closed shape, do not intersect - geometry definition