# Perpendicular line and perpendicular side of poligon

**Lesson Aims**- The study of Perpendicular Lines and Perpendicular Sides of Polygons.
- Comparison of angle sizes.
- Investigation of angles and Perpendicular Lines and Perpendicular Sides of Polygons.

**Name of Model**A sweet box.

**The Lesson Structure**The measuring tool,Composition and Decomposition,Polygons 3,Perpendicular Lines and Perpendicular Sides of Polygons.

**Lesson Content**In this lesson the pupils will investigate intersection of straight lines,perpendicular lines and perpendiculars sides of Polygons. The model comes as surprise while learning new concepts and revising previously learnt concept.

**Prior knowledge**.The concepts of Angle, Right Angle,Square and Pentagon

**Materials**Measuring Tool, origami sheets 15×15 cm.