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Greatest common factor (GCF) - The greatest whole number (integer) which will divide exactly (be divisible) into each of two or more given whole numbers. This is most easily done by finding which prime factorization for each given number contains the fewest of each prime number and multiplying together the primes thus found (or multiply all of the common factors together). A check for having found the correct GCF is that the quotients found by dividing the given numbers by the GCF are relatively prime. A mnemonic (memory aid) for distinguishing GCF from LCM is that GCF uses the "Fewest" of each prime number while LCM uses the "Most." See Least Common Multiple (LCM). See also the explanation on Factor Trees for finding GCFs, LCMs and LCDs (Least Common Denominators).
Geometry - . Literally, "earth measure."
Graph - A set of points, often plotted within a coordinate system, which represents a function, figure or data set.
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Last updated 6/2/97 - 4/13/2000.