Parallelogram Formulas

1. Area of Parallelogram Formula

$\mathrm{Area}=b\times h$

Area is base (b) times height (h).

2. Perimeter of Parallelogram Formula

$\mathrm{Perimeter}=2(a+b)$

Perimeter is twice the sum of adjacent sides (a and b).

3. Diagonal of Parallelogram Formula

$d=\sqrt{a{2}^{}+b{2}^{}+2abcos\theta }$

Diagonal (d) uses sides (a, b) and angle (θ).

4. Side of Parallelogram (from Area) Formula

$a=\frac{\mathrm{Area}}{h}$

Base (a) is area divided by height (h).

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