What is a Polygon? | Worksheet - Free Printable

Final Answer:
The shapes that are polygons are: the square, the rectangle (L-shaped), the regular pentagon, the house shape (pentagon), and the triangle.

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Explanation:
A polygon is a closed shape made only of straight lines — no curves, no gaps.

Let’s check each shape:

1. Square — ✔ Yes. 4 straight sides, closed.
2. L-shaped figure — ✔ Yes. Made of straight lines, fully closed.
3. Oval — ✘ No. It has curved sides.
4. Wavy shape (like a squiggle) — ✘ No. Curved and not closed.
5. Pentagon (5 straight sides) — ✔ Yes. Closed, all straight.
6. Two circles connected — ✘ No. Curves only.
7. Squiggly line (open) — ✘ No. Not closed.
8. Circle — ✘ No. Curved.
9. Vertical rectangle — ✔ Yes. Straight sides, closed.
10. House shape (square + triangle on top) — ✔ Yes. All straight lines, closed.
11. Triangle — ✔ Yes. 3 straight sides, closed.
12. Ball with dots (sphere-like) — ✘ No. Curved surface.

So only the ones with *only straight sides* and *fully closed* count — that’s 5 shapes.

The bottom row (snowman, house, ball) is a separate question: “Which of these objects is made of polygons?”
- Snowman: round parts → not polygons.
- House: walls and roof are straight lines → yes, made of polygons.
- Ball: round → not polygons.

So for the bottom question: circle the house.

But since the main task says “Color in the shapes below that are polygons,” the answer is the 5 polygon shapes listed above.