Polygons: Properties, Construction, and Angle Sums

**Learning Outcome**: The learner recognises and constructs lines, angles and geometric figures. **Subject Competences** (relevant to this lesson): "Constructs simple polygons"; "States properties of regular polygons and solids"; "Applies the formulae for exterior and interior angle sum of polygons" **Language Competences**: "States properties of regular polygons" **Content**: "Simple polygons"; "Regular polygons" **Suggested Activities** (relevant): "Constructing simple triangles, quadrilaterals, pentagons and hexagons using a pair of compasses and a ruler"; "Stating the properties of regular polygons"; "Working out angle sum of interior and exterior angles of regular polygons" **Guidance to the Teacher**: "Use models to illustrate different solids. Give various geometric terms using many physical examples which are familiar to learners. Encourage learners to use standard geometric instruments and correct language." **Suggested Competences for Assessment** (relevant): "Constructs various angles, polygons and circles"; "Finds interior and exterior angle sums of polygons"