Mathematics - Geometry (Area Formula)

Note: "ab" means "a" multiplied by "b". "a2" means "a squared", which is the same as "a" times "a".

1. Square = a²


2. Rectangle = ab


3. Parallelogram = bh


4. Trapezoid = h/2 (b₁ + b₂)


5. Circle = pi r²


6. Ellipse = pi r₁ r₂


(pi = = 3.141592)