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. |