It means that the 4 hydrogen atoms of a methane molecule are at the vertices of a regular tetrahedron with the carbon atom at its centre.
If "mi then" is meant to be methane, then the answer is approx 0.00018%
1 ratio 5 is the fixed ratio of atom in a molecules...
in geometry...it means that the measure of the angles adds up to 90 degrees
The common leg of two angles.
It is a flat two dimensional surface which extends to infinity in all directions.
polar bears!
Stigmatism doesn't meant anything in geometry and is not even a word. Astigmatism, however, is where rays in an optical system propagate in two perpendicular planes that have different focus.
There's no such molecule; elements cannot combine that way. If you meant H10C4, then it's a structural isomer of butane. (Butane or 2-methylpropane.)
According to Euclidean geometry, that is an object where all the angles are the same and all the sides are the same length.
Rise over run, generally change in y-coordinates divided by change in x-coordinates.
It allowed points in space to be described algebraically. This allowed lines and curves to be described using algebra. Bringing together algebra and geometry meant that tools that mathematicians had developed for solving algebraic problems could be applied to problems in geometry and tools from geometry could be applied to algebra.
Ozone is a chemical which is a type of oxygen molecule. It is three atoms of oxygen combined.