A fractal in a 2-dimensional plane has a dimension between 1 and 2.
Yes.
They have positive non-integer dimensions.
Fractals are a special kind of curve. They are space filling curves and have dimensions that are between those of a line (D = 1) and an area (D = 2).
Traditional geometric figures have dimensions which are integers: 0 for a point, 1 for a line or Mobius strip, 2 for a plane figure or Klein bottle, and 3 for a solid. Fractals have dimensions which are not integers.
They can be three dimensional, for example, the Menger Sponge. Mathematically, there is no limit to the number of dimensions.
No. Idealised objects have 0 or 1 dimensions. Day to day objects have 2 or 3 dimensions. More exotic objects have 4 or more integer dimensions and fractals have fractional dimensions.
A diagonal in 2-dimensions, an edge or diagonal in 3-dimensions
Pi is a number. There are no fractals of pi.
Crystals are usually not fractals.
Nobody. Fractals are not owned by anyone!
The Beauty of Fractals was created in 1986.
Some common techniques for generating fractals would be to use iterated function systems, strange attractors, escape-time fractals, and random fractals.