Common geometry formulas 

Here, we provide you with common geometry formulas for some basic shapes

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Rectangle:

Perimeter = l + l + w + w = 2 × l + 2 × w

Area = l × w

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Square:

Perimeter = s + s + s + s = 4 × s

Area = s²

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Parallelogram:

Perimeter = a + a + b + b = 2 × a + 2 × b

Area = b × h

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Rhombus:

Perimeter = b + b + b + b = 4 × b

Area = b × h

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Triangle:

Perimeter = a + b + c

Area = (b × h)/2

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Trapezoid:

Perimeter = a + b + c + d

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Circle:

Perimeter = 2 × pi × r or Perimeter = pi × d

Area = pi × r² or Area = (pi × d²)/4