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All about Polygons Video Lecture | Mathematics for Grade 6
FAQs on All about Polygons Video Lecture - Mathematics for Grade 6
| 1. What is a polygon? |  |
Ans. A polygon is a closed figure made up of straight lines called sides. Each side of a polygon intersects exactly two other sides, and the sides do not cross over each other.
| 2. How can we classify polygons based on the number of sides? | |
Ans. Polygons can be classified into different types based on the number of sides they have. Some common classifications include:
- Triangle: A polygon with three sides.
- Quadrilateral: A polygon with four sides.
- Pentagon: A polygon with five sides.
- Hexagon: A polygon with six sides.
- Heptagon: A polygon with seven sides.
- Octagon: A polygon with eight sides.
- Nonagon: A polygon with nine sides.
- Decagon: A polygon with ten sides.
| 3. How can we determine the sum of the interior angles of a polygon? | |
Ans. The sum of the interior angles of a polygon can be determined using the formula: (n-2) * 180 degrees, where 'n' represents the number of sides in the polygon. For example, a triangle (n=3) has a sum of interior angles of (3-2) * 180 = 180 degrees, while a pentagon (n=5) has a sum of interior angles of (5-2) * 180 = 540 degrees.
| 4. Can a polygon have curved sides? | |
Ans. No, a polygon cannot have curved sides. By definition, a polygon is a closed figure made up of straight lines. If any of the sides of a figure are curved, it is not considered a polygon.
| 5. What is the difference between a regular polygon and an irregular polygon? | |
Ans. A regular polygon is a polygon in which all sides are equal in length and all angles are equal. Examples include a regular triangle, regular quadrilateral, and regular hexagon. On the other hand, an irregular polygon is a polygon in which the sides and angles are not all equal. Examples include an irregular pentagon, irregular heptagon, and irregular octagon.
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