Coordinate Geometry | Area of A Triangle The area of a DABC with vertices and is given by area Proof : Let and be the vertices of the given DABC. Draw AP, BM and CN perpendiculars to the x-axis. Then, and MN = \     area of DABC = ar (trap. BMPA) + ar (trap.. APNC)…

Coordinate Geometry | Section Formula Section formula : The coordinates of the point P(x, y) which divides the line segment joining and internally in the ratio m : n are given by Proof:     Let X’OX and YOY’ be the coordinate axes. Let and be the end points of the given line segment AB. Let P(x,…