Math
Area of polygons.
Definition
Formulas for calculating the area enclosed by various polygons. Common formulas include triangle (½bh), rectangle (lw), parallelogram (bh), trapezoid (½(b₁ + b₂)h), and regular polygon (½ · apothem · perimeter).
Examples
Real-world.
- 1 A triangle with base 10 and height 6 has area ½ · 10 · 6 = 30 square units
- 2 A trapezoid with parallel sides 8 and 12 and height 5 has area ½(8 + 12)(5) = 50 square units
Key Fact
Triangle: ½bh, Rectangle: lw, Trapezoid: ½(b₁ + b₂)h