The definition of a circle is, via Euclid, "A circle is a plane figure bounded by one line, and such that all right 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 center."
That is already the ideal, we don't draw anything else from a simple definition.
Pi is simply the ratio of the diameter to the circumference; it just happens to be a transcendental number, which means that it is a decimal fraction that never repeats. It is not an approximation; we use approximate values for it depending on the required precision for what we are doing.
That is already the ideal, we don't draw anything else from a simple definition.
Pi is simply the ratio of the diameter to the circumference; it just happens to be a transcendental number, which means that it is a decimal fraction that never repeats. It is not an approximation; we use approximate values for it depending on the required precision for what we are doing.
If you get to thinking you’re a person of some influence, try ordering somebody else’s dog around.
