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This guide explores the fascinating world of polygons, defined as closed figures with straight sides. We distinguish between regular polygons, with congruent sides and angles, and irregular polygons, where sides and angles vary. Key shapes like triangles, quadrilaterals, parallelograms, trapezoids, pentagons, hexagons, octagons, and decagons are outlined, each with unique properties. Discover how these shapes form the foundation of geometry and their relevance in everyday life.
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Polygon • A closed figure with straight sides • Here are some polygons…..
These are not polygons • Do you know why????
Regular Polygon All angles are congruent All sides are congruent
Irregular Polygons • Sides and angles are not congruent.
Triangle • 3 sides • 3 angles
Quadrilateral • 4 sides • 4 angles
Parallelogram • Quadrilateral with 2 sets of parallel sides
Trapezoid • Quadrilateral with one set of parallel sides
Pentagon • A polygon with five sides
Hexagon • A polygon with 6 sides
Octagon • A polygon with 8 sides
Decagon • A polygon with 10 sides