Hexagon		The value of a variable that makes an equation true.
Heptagon		A polygon with 8 sides.
Horizontal		The set of numbers containing zero, the natural numbers, and all the negatives of the natural numbers.
Hypotenuse		A polygon with 7 sides.
Inequality		A three-dimensional figure with all points in space a fixed distance from a given point, called the center.
Infinity		A whole number that is not divisible by 2.
Integer		The point (0, 0) on a coordinate plane, where the x-axis and the y-axis intersect.
Intercept		The root of an equation is the same as the solution to the equation.
Natural Number		A mathematical expression which shows that two quantities are not equal.
Negative Number		An angle measuring more than 90 degrees.
Number Line		A real number that is less than zero.
Numerator		A limitless quantity.
Obtuse Angle		The x-intercept of a line or curve is the point where it crosses the x-axis, and the y- intercept of a line or curve is the point where it crosses the y-axis.
Octagon		In statistics, the difference between the largest and the smallest numbers in a data set.
Origin		A quadrilateral with four equal sides and four 90 degree angles.
Odd Number		The line opposite the right angle in a ight triangle.
Radius		The distance from the center to a point on a circle; the line segment from the center to a point on a circle.
Range		The top part of a fraction.
Ratio		A pair of numbers that compares different types of units.
Root		A line with zero slope.
Slope		A polygon with 6 sides.
Solution		A line on which every point represents a real number.
Sphere		The steepness of a line expressed as a ratio, using any two points on the line.
Square		The counting numbers.