Area (other)

The area of a plane figure is the measure of the region it covers. For many shapes beyond rectangles and triangles, we use specific formulas derived from their properties.

Important properties

• Parallelogram: Area = base × height

• Trapezoid: Area = (base₁ + base₂) × height ÷ 2

• Rhombus: Area = (diagonal₁ × diagonal₂) ÷ 2

• Circle: Area = π × radius²

• Regular polygon (with n sides of length a): Area = (n × a²) ÷ (4 × tan(π/n))