# The Different Types of Closed Shapes in Geometry

In geometry, a closed shape is a shape that has no open sides or gaps. A closed shape is also called a figure or a form. There are three main types of closed shapes: polygons, circles, and ellipses. Let's take a closer look at each one.

## Polygons

A polygon is any closed shape with straight sides. The word "polygon" comes from the Greek words "poly," meaning "many," and "gon," meaning "angles." Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. Polygons can be either convex or concave. Convex polygons have all their angles pointing outward, while concave polygons have at least one angle pointing inward.

## Circles

A circle is a closed shape with curved sides that are all the same distance from the center point. Circles are unique because they don't have any angles. The word "circle" comes from the Greek word "kirkos," which means "ring." Because circles are round, they also have circumference and diameter. The circumference is the distance around the outside of the circle, while the diameter is the distance across the circle through its center point.

## Ellipses

An ellipse is a closed shape with two focal points and curved sides. The word "ellipse" comes from the Greek word "elleipsis," which means "omission." Ellipses look like ovals, but they are not quite the same. An oval is actually a special type of ellipse where the two focal points are exactly the same distance from the center point. This creates a perfectly symmetrical shape. Most ellipses, however, are not symmetrical. This just means that their two focal points are not exactly the same distance from the center point.

## Conclusion:

As you can see, there are three main types of closed shapes in geometry: polygons, circles, and ellipses. Each one has its own unique characteristics that set it apart from the others. Now that you know a little bit more about them, see if you can identify them next time you're out and about!

## FAQ

### What are closed shapes called?

A closed shape is also called a figure or a form.

### What is closed shapes and open shapes?

A closed shape is a shape that has no open sides or gaps, while an open shape has at least one side or gap that is not connected to the rest of the shape.

### What is the meaning of closed figure?

A closed figure is a shape that has no open sides or gaps. A closed figure is also called a form.

### What is a closed object?

A closed object is a three-dimensional figure that has no open sides or gaps. A closed object is also called a solid. Examples of closed objects include spheres, cubes, and cylinders.