Area=ba where b=base (any side), and a=altitude, the perpendicular length from the base to the opposite side
OR
Area= (d1*d2)/2 where d1 is the diagonal and d2 is the other diagonal
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A rhombus sometimes is a quadrilateral. that's what my dad said, he's a math genius.
Perimeter of a rhombus = 4 x (length of one side)(Notice how closely the formula resemblesthe one for the perimeter of a square.)
you use the quadratic formula in math when the quadratic equation you are solving cannot be factored.
The formula is: Number of sides = 6.
Perimeter = 4*n whereas n is the length of its side