This document contains details of a mathematics lesson plan for 9th standard including the name of the teacher, school, subject, unit and sub-unit being covered. The key point being taught is that triangles formed by two intersecting lines will always have the same area. The lesson plan outlines the curriculum statement, content analysis, learning outcomes, prerequisites, teaching resources, classroom interactions and activities to help students understand and apply the concept that triangles formed by two intersecting lines will always have the same area.