CBSE Tutorials

Similar Triangles | Introduction Similar figures: Geometric figures which have the same shape but different sizes are known as similar figures. Illustrations: 1.    Any two line-segments are similar 2.    Any two squares are similar 3.    Any two circles are similar Two congruent figures are always similar but two similar figures need not be congruent. Similar polygons: Two polygons…

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)…