Geometry Formulas

Perimeter of Square

• Perimeter = 4s

• Perimeter = a + b + c

• Perimeter = 2b + 2l

• Perimeter = a + b + c + d

Perimeter of Rectangle

• Perimeter = 4s

• Perimeter = 2L + 2W

• Perimeter = a + b + c

• Perimeter = 2b + 2l

Perimeter of Triangle

• Perimeter = 4s

• Perimeter = 2L + 2W

• Perimeter = a + b + c

• Perimeter = 2b + 2l

Perimeter of Parallelogram

• Perimeter = 4s

• Perimeter = 2L + 2W

• Perimeter = a + b + c

• Perimeter = 2b + 2l

Perimeter of Trapezoid

• Perimeter = 4s

• Perimeter = 2L + 2W

• Perimeter = a + b + c + d

• Perimeter = 2b + 2l

Area of a Square

• Area = s²

• Area = lw

• Area = bh÷2

• Area = h(b₁ + b₂)÷2

Area of a Rectangle

• Area = s²

• Area = lw

• Area = bh÷2

• Area = h(b₁ + b₂)÷2

Area of Triangle

• Area = s²

• Area = lw

• Area = bh÷2

• Area = h(b₁ + b₂)÷2

Area of a Trapezoid

• Area = s²

• Area = lw

• Area = bh÷2

• Area = h(b₁ + b₂)÷2

Area of a Parallelogram

• Area = s²

• Area = lw

• Area = bh

• Area = h(b₁ + b₂)÷2