Table of Contents

- 1 Can a circle be a line?
- 2 Does a circle have infinite vertices?
- 3 Can a circle be 1 dimensional?
- 4 What is the difference between a line and a circle?
- 5 How many sides dies a circle have?
- 6 Can a circle have 4 corners?
- 7 Is circle 1d or 2D?
- 8 Is a circle one-dimensional or two?
- 9 What is topology in geometry?
- 10 Can a circle have an edge with no point?

## Can a circle be a line?

A circle is a type of line. Imagine a straight line segment that is bent around until its ends join. Then arrange that loop until it is exactly circular – that is, all points along that line are the same distance from a center point. A circle is a line, and so, for example, has no area – just as a line has no area.

## Does a circle have infinite vertices?

A circle is approximated by a regular polygon with an infinite number of vertices, which are not necessarily “corners” since “corner” implies a right angle.

**Does a circle have infinite or no sides?**

It might be more defensible to say that a circle has infinitely many corners than infinitely many sides (although this is not a question that seems to get asked very often). Every point on the boundary of the circle is an extreme point, so it is certainly true that a circle has infinitely many.

### Can a circle be 1 dimensional?

Mathematicians often call the circle the 1-dimensional sphere, or S1. It’s defined to be the set of points in the plane that lie exactly 1 unit away from a central point, (0,0), or the origin. (To be more careful, this is the unit circle. In general, a circle can be any size and lie anywhere in the plane.)

### What is the difference between a line and a circle?

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**What type of line is a circle?**

A circle is a plane figure bounded by one curved line, and such that all straight lines drawn from a certain point within it to the bounding line, are equal. The bounding line is called its circumference and the point, its centre.

#### How many sides dies a circle have?

Circle/Number of edges

#### Can a circle have 4 corners?

Infinite, if we define corner as a place where you cannot have a neighbourhood of the line that makes the shape. Either way, both these definitions work normally for the polygons. But the circle ain’t a polygon! In a simple way we can define a corner where the end points of two lines made contact or intersect.

**How many sides has a circle have?**

## Is circle 1d or 2D?

Officially, it’s one-dimensional because at any point, the tangent space is a one-dimensional vector space.

## Is a circle one-dimensional or two?

A two-dimensional shape is a shape that has length and width but no depth. In mathematics, shapes (mathematical models) are derived from objects in the real world that have common geometric attributes. A circle is one example of a two-dimensional shape. A rectangle is another example of a two-dimensional shape.

**Why is a square topologically equivalent to a circle?**

It is sometimes called “rubber-sheet geometry” because the objects can be stretched and contracted like rubber, but cannot be broken. For example, a square can be deformed into a circle without breaking it, but a figure 8 cannot. Hence a square is topologically equivalent to a circle, but different from a figure 8.

### What is topology in geometry?

Topology studies properties of spaces that are invariant under any continuous deformation. It is sometimes called “rubber-sheet geometry” because the objects can be stretched and contracted like rubber, but cannot be broken. For example, a square can be deformed into a circle without breaking it, but a figure 8 cannot.

### Can a circle have an edge with no point?

That’s a curve that can only intersect a straight line in 2 points, 1 point (so the line is a tangent line), or no points. Usually the word “edge” requires that edge to be a straight line segment. The circle has no straight line segments as edges.

**What is the difference between diameter and radius in geometry?**

Geometry and the Circle. A real-world example of diameter is a 9-inch plate. The radius of a circle is the distance from the center of a circle to any point on the circle. If you place two radii end-to-end in a circle, you would have the same length as one diameter. Thus, the diameter of a circle is twice as long as the radius.