M

**magnitude: the magnitude of a vector is its length.**

**major arc: an arc of measure greater than 180 degrees.**

**major axis: the line segment connecting the two
vertices that are farthest apart in an **

** ellipse.**

**matrix: a table of numbers arranged in rows and columns.**

**maxima: the points on a curve where the value is greater
than that of the surrounding **

** points.**

**mean: average, arithmetic mean.**

**median: the number in a group of numbers such that
there are an equal number of **

** numbers
in the set greater than the number as are less than the number.**

**midpoint: a point, M, on a line segment, AB,
such that AM = MC.**

**minima: the points on a curve where the value is less
than that of the surrounding points.**

**minor arc: an arc on a circle that is less than 180 degrees.**

**minor axis: the shortest distance across an ellipse through
the center.**

**minute: the unit of measure of an angle that is 1/60 of
a degree.**

**mode: the number that occurs most frequently in a set
of data.**

**modulus: the absolute value of a complex number.**

**monomial: an algebraic expression that does not involve
any additions or subtractions.**

**multiplicand: in the equation ab = c, a and b
are multiplicands.**

**multiplication: the operation of repeated addition.**

**multiplicative identity: the number 1 is the multiplicative
identity because 1 * a = a for all **

* a*.

**multiplicative inverse: the number, b, that when
multiplied by a number, a, gives a result **

** of
1. Reciprocal. b = 1/a.**