The following formulas hold for squares:
Area = side * side
perimeter = side * 4
diagonal = square root of (side^2*side^2) (due to Pythagoras)
What is a square?This is a square. A square is a quadrangle having four sides of the same length and perpendicular to each other. This means, a square is a rectangle and a rhomb at the same time.
In a square, these formulas hold: The area equals a*a.
The diagonal has the length a*(square root of 2).
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