Chromium
Chester Rodney
``Comport room''
It can stand for many things. One possibility is the vertical axis in solid (3-dimensional) analytical geometry.
DR is for Debit Record, and CR is for Credit Record.
Cr is the symbol for chromium, BUT when in parenthesis and the first letter is lowercase, it means "Crystalline"
cannot be determined
dr and cr are debits and credits, and are abbreviations from the original Latin words.
The A stands for angle.
to measure; the act of measuring
Alternate interior angles
Side, side, side
Discrete Algebra and Geometry.