Coordinate Geometry
- Distance Formula:- d = √(x2-x1)2 – (y2-y1)2
- Section Formula:– (x,y) = [(m1x2 + m2x1)/(m1+ m2)] , [(m1y2 + m2y1)/(m1 + m2)]
- Mid-point Formula:– (x,y) = [(x1 + x2)/2 , (y1 + y2)/2]
- Area of Triangle:– 1/2[x1(y2 – y3) + x2(y3 – y1) + x3(y1 – y2)]