perimeter | | Triangle with two sides and two angles equal. |

obtuse | | The length of the outside boundary of a shape. |

MMDXIV | | An amount out of 100. |

lengthwidth | | Sum divided by the number of parts. |

denominator | | 180 degree angle. |

fraction | | g stands for. |

edge | | t stands for. |

Average | | Angles more than 90 degrees but less than 180 degrees. |

factor | | mm stands for. |

revolutions | | Area equals _________ multiplied by _________. |

equilateral | | A number which has only two factors - one and itself. |

face | | Triangle with each side a different length. |

precent | | 2514 in Roman numerals. |

metres | | Top number in a fraction. |

centimetres | | cm stands for. |

numerator | | Bottom number in a fraction. |

angle | | Amount of turning between two lines that meet at a point. |

rightangled | | A whole number that can be divided exactly into another number. |

grams | | Angles more than 180 degrees. |

straightangle | | Triangle with one right angle. |

millimetres | | Where edges meet to make a corner. |

tonnes | | 360 degrees. |

Vertex | | km stands for. |

scalene | | Angles less than 90 degrees. |

isosceles | | Flat surface of a solid shape. |

kilometres | | Size of the surface. |

Area | | Triangle with all sides and all angles equal. |

primenumber | | Where two surfaces meet. |

acute | | m stands for. |

reflex | | Any part of a group or whole. |