# how to make math project 2D and 3D polygon shapes working model making

### 2D Polygon Shapes Introduction:

In geometry, a polygon is a two-dimensional (2D) closed figure formed by straight line segments. The sides of a polygon do not cross each other, and each side intersects exactly two others.

The common types of 2D polygons include:

1. Triangle: A polygon with three sides.
2. Quadrilateral: A polygon with four sides. Examples include squares, rectangles, parallelograms, and rhombuses.
3. Pentagon: A polygon with five sides.
4. Hexagon: A polygon with six sides.
5. Heptagon: A polygon with seven sides.
6. Octagon: A polygon with eight sides.
7. Nonagon: A polygon with nine sides.
8. Decagon: A polygon with ten sides.

### Working model for a math project involving 2D and 3D polygon shapes making

Creating a working model for a math project involving 2D and 3D polygon shapes using cardboard can be both educational and fun.

Below is a step-by-step guide to help you build a model that showcases various types of polygon shapes:

## Materials Needed:

1. Cardboard sheets
2. Ruler
3. Pencil
4. Craft knife or scissors
5. Colored markers or paper
6. Glue
7. Toothpicks or straws
8. Small paper or cardboard rectangles for labels

## Video Step by Steps on polygon shapes working model:

1. Prepare the Base:
• Cut a large piece of cardboard to serve as the base of your model.
2. Create 2D Polygon Shapes:
• Draw and cut out various 2D polygon shapes such as triangles, quadrilaterals, pentagons, hexagons, etc., from colored paper or cardboard.
• Label each shape with its name and the number of sides.
3. Arrange 2D Shapes:
• Arrange the 2D polygon shapes on the cardboard base, creating an aesthetically pleasing arrangement.
• Attach each shape to the base using glue.
4. Create 3D Polygon Shapes:
• To represent 3D shapes, cut out corresponding 2D shapes to act as the faces of the 3D shapes. For example, a cube would have six squares.
• Fold the faces along the edges and attach them together using glue or tape to form 3D shapes.
• Create a variety of 3D shapes such as cubes, pyramids, prisms, cylinders, and spheres.
5. Arrange 3D Shapes:
• Place the 3D shapes on the cardboard base alongside the 2D shapes.
• Use toothpicks or straws to connect the 2D shapes to their corresponding 3D shapes, representing the transformation from 2D to 3D.
6. Label and Annotate:
• Label each 2D and 3D shape with its name, the number of sides or faces, and any other relevant information.
• You can create small cardboard rectangles as labels and attach them next to each shape.
7. Color and Decorate:
• Use markers or colored paper to add vibrant colors to your shapes, making the model visually appealing.