Typically, with hand written documents, the number zero will be indicated as a circle with a slash through it.
If you mean "what is the radius of a circle", then the answer is the line segment or length from the center of circle to the set of points that form the circle. The radius is also half of the diameter.
*Note that it is assumed you know what the terms diameter, perpendicular, bisect/bisection and intersection mean in relation to geometry. If not, they are explained in the discussion area. To construct a regular pentagon using a compass and ruler (a longer, but more precise method): # Draw a circle in which to inscribe the pentagon and mark the center point O. # Choose a point A on the circle; this will be one vertex of the pentagon. Draw the diameter line through O and A. # Construct a line perpendicular to the line OA passing through O. Mark its intersection with one side of the circle as the point B. # Construct the point C as the midpoint of O and B. # Draw a circle centered at C through the point A. Mark its intersection with the line OB(inside the original circle) as the point D. # Draw a circle centered at A through the point D. Mark its intersections with the original circle as the points E and F. # Draw a circle centered at E through the point A. Mark its other intersection with the original circle as the point G. # Draw a circle centered at F through the point A. Mark its other intersection with the original circle as the point H. # Construct the regular pentagon AEGHF. To construct a regular pentagon using a protractor (less time, but not as accurate): # Make a short line. This will be one side of the pentagon. Label the ends A and B # Place the baseline of the protractor on this line, with the centre at A. # Mark the point of 108o with a dot. # Make another line which starts at A, is the same length as AB and goes towards the dot. # Repeat the use of the protractor on the newest line you have drawn three more times. The final line should meet up with B.
Especially if it also has a vertical line in the middle, it may be a reference to the Deathly Hallows of Harry Potter.
An open circle is usually found on a number line in math. An open circle usually represents a number that is not included in the line.
If you mean the diameter of a circle with area pi, then the diameter is 2. If you mean the diameter of a circle with circumference pi, then the diameter is 2. If you mean the diameter of a circle with diameter pi, then the diameter is pi. If you mean the diameter of a circle with radius pi, then the diameter is 2pi.
Circle with a line through it is square yards, a square with a line through it is square feet
If you mean a line that gous from the center of a circle to the edge of the circle, that is a radius.
In computer technology, a circle with a line through it typically denotes a zero, as opposed to the letter 'O'. This is done to prevent confusion. Not sure if this is what you where looking for
what a sign mean that has a red circle with rock in it and a red line through it
If you mean a zero with a diagonal line through it, it is the symbol for the empty set which is the set that contains nothing.
A tangent to a circle is a line which touches the circle once. That is, it does not pass through the circle, which would mean intersecting it twice. A way to form a tangent is draw any line from the centre point of a circle to its edge. A line on the edge perpendicular (at 90 degrees to) this line will be a tangent.
Diameter of a circle is a line that goes from one side of the circle, passes through the center of the circle, and touches the other side of the circle. So a circle could have a diameter of length 2 inches, or maybe 7 feet, etc. If the line does not pass through the center of the circle, it is not a diameter.
The diameter is the chord (line that goes from the circle to the circle) that goes through the center of the circle. It is the largest chord. It is also equal to twice the radius.
A line that bisects a circle and goes through the center of it is the diameter.
The line, or I (Initialise) means on
It is a straight line that touches the circle.
First of all, a circle has no edges. But if you want to call the curvy line an edge, then it has at mostonly one. But we know what you mean ... a line segment through a circle, from one point on thecurvy line to another point on it.In general, those line segments are chords of the circle. In the special case where one of themhappens to pass through the center of the circle, it's also a diameter of the circle, and it's alsothe longest possible chord.