formulas for geometry. Right Triangle and Pythagoras theorem. P a b c.
D x2-x12 y2 y12. Frac a 2 2a. Isosceles two equal sides Equilateral all sides equal Rightoone 90 or right angle A c b B C a.
Area and Perimeter of Rectangle.
P a 3 6. D x₂ - x₁² y₂ - y₁² x1 x22 y1 y22 a²b²c². Perimeter s s s s 4 s. Frac p a3 6 6p a3.