general astronomy
A sphere is a three dimentional shape, a circle is a two dimentional shape. You can't pick up a circle, it can only be drawn. In differential geometry, a one dimensional sphere is a point, a two dimensional sphere is a circle and a three dimensional sphere is what we call a "sphere", there is no limit to the number of dimensions a sphere can have.
Circumscribed.
A chord is a straight line drawn through a circle which divides the circle into two parts. The line can be drawn anywhere in the circle EXCEPT the center where it becomes the diameter.
Both usages are correct, as in these examples: "A circle is round, so it is drawn round." "I drew a circle around the correct answer."
There are infinite diameters within a circle.
A Great Circle is the largest circle that can be drawn on any sphere. Mercator's Chart projection is the great circle chart.
Much bigger and better than a regular circle... But seriously, a great circle on a sphere is a circle that runs along the surface of that sphere and cuts it into two equal halves. It is the largest circle that can be drawn on a given sphere. The center of any great circle is the center of the sphere.
That's called a "great circle" of the sphere. -- It's any circle whose center is at the center of the sphere. -- Its diameter is equal to the diameter of the sphere. -- Its area is equal to 1/4 the surface area of the sphere. -- The shortest distance between any two points on the sphere is along the piece of the great circle on which they lie. (There's only one, unless the two points are the opposite ends of a diameter.)
Circle in 2D is a straight figure drawn on a plane. But if we take it as a sphere,it cannot be straight.
A sphere is a three dimentional shape, a circle is a two dimentional shape. You can't pick up a circle, it can only be drawn. In differential geometry, a one dimensional sphere is a point, a two dimensional sphere is a circle and a three dimensional sphere is what we call a "sphere", there is no limit to the number of dimensions a sphere can have.
ones that can be drawn in the plane such as a triangle, circle, etc. A sphere is not one.
The universal sign for anarchist consists of an exaggeratedly drawn ''A'' with a circle drawn around it.
Circumscribed.
The ratio is pi/4.
A chord is a straight line drawn through a circle which divides the circle into two parts. The line can be drawn anywhere in the circle EXCEPT the center where it becomes the diameter.
The radius of the largest circle you can fit is 2.72cm
Both usages are correct, as in these examples: "A circle is round, so it is drawn round." "I drew a circle around the correct answer."