I
Improper
fraction A positive fraction whose numerator is greater than or equal to its
denominator, or the
Independent
events Events that have no effect on each other.
Indirect
measurement A measurement in which no direct comparison is made between the
object being
measured
and a physical standard. Or, a
measurement obtained by calculation
Inequality
A mathematical sentence formed by placing an inequality
sign between two expressions.
Infinite
set A set with an unlimited number of elements
Integers
The whole numbers and their opposites: . . . -2, -1,
0,1,2 .........
Interest
The amount of money paid for the use of money.
Interpolation
A method of
approximation.
Intersecting
lines Two straight lines that have one and only one point in common
Intersecting
planes Two planes that have one and only one line in common
Intersection
(of sets) The set of all elements which belong to both of two sets. ,P n
Q" is read "P intersection Q"
Inverse
operations Operations
that undo each other, such as addition and subtraction or multiplication and
division.
Irrational
number All real numbers
that are not rational.
Isosceles triangle A triangle with at least two sides congruent.