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Polygon Properties and Classification

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Polygon Properties and Classification

Various polygons including triangle, quadrilateral, pentagon, and hexagon

📐 Part 1: Polygon Classification

1. What is a polygon?

A curved shape with no corners

A closed 2D shape with straight sides

An open shape with any number of sides

A 3D shape with flat faces

2. A polygon with 8 sides is called a(n) _______________.
3. Which of these are polygons? (Tick all that apply)

Triangle

Circle

Pentagon

Semi-circle

Hexagon

4. Match each polygon name with its number of sides:
Quadrilateral
Heptagon
Pentagon
Triangle
3 sides
4 sides
5 sides
7 sides

🔢 Part 2: Interior Angles

5. The formula for finding the sum of interior angles in a polygon is _______________.
6. Calculate the sum of interior angles for each polygon. Show your working:

a) Triangle (3 sides):

b) Hexagon (6 sides):

7. A polygon has interior angles that sum to 1080°. How many sides does it have?

✏️ Part 3: Properties and Application

8. What is the difference between a regular and irregular polygon?
9. Name two properties that ALL polygons must have:

1. ________________________________

2. ________________________________

10. Draw a polygon with 5 sides in the box below. Label it with its correct name.
11. Look around your classroom or home. Name one real-world object that is shaped like each polygon:

Triangle: ________________________________

Quadrilateral: ________________________________

Hexagon: ________________________________

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