General
The middle number when the
numbers are in order.
Median
Any real number that doesn’t have
fractions or decimals including 0
and all negative “whole numbers”.
Interger
The height of a triangle that makes
a 90-degree angle with the base of
the triangle.
Altitude
A number with exactly 2 factors.
Prime
All sides are equal.
Equilateral
A fraction with the
number of successful ways on top
and total number of ways on the
bottom.
Probability
The most frequently listed number.
Mode
Congruent means equal when
referring to physical objects. It
means they have the same size and
shape.
Congruent
Another word that the ACT likes to use for number.
Constant
A corner of a shape.
Vertex
Rise over Run
Slope
One after the other.
Consecutive
Lines that have slopes that are
negative reciprocals of each other.
Perpendicular
What is it called when you multiply numbers?
Product
For a 3-dimensional object, such as
a cube, the surface area is the sum
of the areas of all of the faces.
Surface Area
A line that intersects two or more
other lines. The other lines are often
(but not always) parallel.
Traversal
The number in front of a "X" term.
Coefficient
A U-shaped graph that has an
equation with an 2x.
Parabola
The result when you divide
numbers.
Quotient
A triangle with at least two sides
and two angles congruent.
Isosceles
Any expression that includes:
“<”, “>”, “≤”, or “≥”
Inequalities
The lowest y value of a graph.
Minimum
All of the possible x values of a
graph.
Domain
The middle number when the
numbers are in order.
Median
The angle formed by a straight line.
Straight Angle