In geometry, a torus (plural tori, colloquially donut) is **a surface of revolution generated by revolving a circle in three-dimensional space about an axis that is coplanar with the circle**.

Contents

- 1 How do you define a torus?
- 2 What is the shape of a torus?
- 3 What is a torus used for?
- 4 Is torus A 3D shape?
- 5 Is a donut a torus?
- 6 Are humans a torus?
- 7 Is a sphere a torus?
- 8 What is a 2D torus?
- 9 What is a flat torus?
- 10 What is special about torus?
- 11 Why is a torus flat?
- 12 Is a torus a manifold?
- 13 What does a torus look like math?
- 14 How do you make a torus?

## How do you define a torus?

1: a doughnut-shaped surface generated by a circle rotated about an axis in its plane that does not intersect the circle. 2: a smooth rounded anatomical protuberance (as a bony ridge on the skull) a supraorbital torus.

## What is the shape of a torus?

A 3d shape made by revolving a small circle (radius r) along a line made by a bigger circle (radius R). It usually looks like a ring.

## What is a torus used for?

323-324). The usual torus embedded in three-dimensional space is shaped like a donut, but the concept of the torus is extremely useful in higher dimensional space as well.

## Is torus A 3D shape?

A torus is a 3D shape formed by a small circle that rotates around a bigger circle. It usually looks like a circular ring, or a donut.

## Is a donut a torus?

In geometry, a torus (plural tori, colloquially donut) is a surface of revolution generated by revolving a circle in three-dimensional space about an axis that is coplanar with the circle.

## Are humans a torus?

And so if you deform the human body and its inner (GI tract) and outer (skin) surfaces into the simplest possible shape, you end up with a doughnut-shaped object, a torus. All the other openings into the body that aren’t part of the GI tract aren’t holes, topologically/mathematically speaking, they’re cavities.

## Is a sphere a torus?

If your second path crosses your first line once, you are on a sphere. If it doesn’t cross or it crosses more than once, you are on a torus.

## What is a 2D torus?

1D torus is a simple circle, and 2D torus has the shape of a doughnut. At one dimension, a torus topology is equivalent to a ring interconnect network, of a shape of a circle. At 2D, it is equivalent to a 2D mesh, but with extra connection at the edge nodes, which is the definition of 2D torus.

## What is a flat torus?

What is a flat torus? This is a square whose sides are pairwise identified. This imaginary square evokes some computer games where the characters desappear on one side of the screen and reappear on the opposite side. In Mathematics, this world is called the square flat torus; this is a particular flat torus.

## What is special about torus?

The torus is the only surface which can be endowed with a metric of vanishing curvature. It is the only parallelizable surface. It is the only surface which can be turned into a topological group.

## Why is a torus flat?

It’s called flat because every piece of it looks like the plane, with a flat geometry. The folded, donut shell torus inherits a curved geometry from the 3-space it lies in. Its inside horizontal circle, for instance, is shorter than its outside horizontal circle.

## Is a torus a manifold?

A torus manifold is an even-dimensional manifold acted on by a half-dimensional torus with non-empty fixed point set and some additional orientation data. The orbit space of a torus manifold has a rich combinatorial structure, e.g., it is a manifold with corners provided that the action is locally standard.

## What does a torus look like math?

In Mathematics, a torus is a doughnut-shaped object such as an O ring. It is a surface of an object formed by revolving a circle in three-dimensional space about an axis that lies in the same plane as the circle.

## How do you make a torus?

Create torus

- On the ribbon, click Model tab Primitives panel Torus.
- Select a planar face or a plane.
- Click to define the center of the torus.
- Click to define the center of the torus section.
- Click to define the diameter of the torus section.