I
Improper FractionFraction larger than one whole.
InchImperial unit for measuring length.
IncreaseGet larger in size or number.
InequalityNot equal in size, number or value.
Infinite, InfinityUnable to be counted, unlimited.
IntegerAny number positive and negative that is not a decimal or fraction. Includes zero.
IntersectTo cross over one another.
IntervalDistance between two points.
Isosceles TriangleTriangle with two equal sides and two equal angles.
IsometricHaving equal dimensions or measurements.