A | B |

Acute Angle | An angle whose measure is greater than zero but less than 90 degrees |

bisect | to divide into two congruent parts |

congruent | having the same size and shape |

diameter | A chord that passes through the center of a circle |

obtuse angle | An angle whose measure is greater that 90 degrees but less than 180 degrees |

ratio | A comparison of two numbers |

x-axis | The horizontal axis on a coordinate plane |

y-axis | The vertical axis on a coordinate plane |

variable | A letter used to represent one or more numbers in an expression, equation or inequality |

scalene triangle | A triangle with no congruent sides |

Isosceles triangle | A triangle with two congruent sides |

circumference | The distance around a circle |

least common denominator | The smallest common multiple of two or more denominators |

quadrant | One of the four regions of the coordinate plane |

radius | A line segment with one endpoint at the center of the circle and the other endpoint on the circle |

angle | A geometric figure formed by two rays that have a common endpoint |

equilateral triangle | A triangle with three congruent sides and three congruent angles |

irrational number | A number that cannot be expressed as a repeating or terminating deciamal |

rational number | Any number that can be expressed as a ratio, a/b, where a and b are integers and b does not equal zero |

Pi | The ratio of the circumference of a circle to the length of its diameter |