Polygons and Types of Quadrilaterals
Learn the properties of polygons and quadrilaterals and how to use the interior angles formula. Let’s get started! 🚀
Video Lesson
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Flashcards
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🛎️ What is a Polygon?
- A polygon is a 2D closed shape made from straight line segments.
- Tip: shapes that are open, curved, or 3D are not polygons.
🛎️ Names of Polygons
- Polygons are named by their number of sides.
- For example: triangle (3), quadrilateral (4), pentagon (5), hexagon (6).
🛎️ Interior Angles of Polygons
- The sum of interior angles depends on the number of sides.
- The formula is (n − 2) × 180°, where n is the number of sides.
🛎️ What is a Quadrilateral?
- A quadrilateral is a polygon with four sides.
- Parallelograms, rectangles, rhombuses, squares, and trapeziums are all quadrilaterals.
Practice Questions
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Interactive Activity
Explore how the number of sides affects a polygon's shape and interior angles
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