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A polygon is a closed figure with straight sides. Polygons can be categorized as either regular, with equal sides and angles, or irregular, where sides and angles differ. Common types of polygons include triangles (3 sides), quadrilaterals (4 sides), parallelograms, trapezoids, pentagons (5 sides), hexagons (6 sides), octagons (8 sides), and decagons (10 sides). It's essential to distinguish between polygons and non-polygons, as the latter do not meet the criteria of having straight sides. Explore the fascinating world of polygons in geometry!
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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