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# 7th Triangle Vocab

Term | Definition |
---|---|

Acute Angle | angle that is less than 90 degrees. |

Obtuse Angle | angle that is more than 90 degrees and less than 180 degrees |

Right Angle | angle that is exactly 90 degrees. A small square is the symbol for this angle. |

Straight Angle | angle that is exactly 180 degrees |

Scalene Triangle | triangle that has NO congruent sides |

Vertex | the common endpoint of 2 rays (point where 2 rays/sides meet and form angle) |

Degrees | unit used to measure angles. |

Acute Triangle | triangle that has all acute angles. |

Right Triangle | triangle that has one right angle. |

Obtuse Triangle | triangle that has one obtuse angle. |

Angle | 2 sides/rays with a common endpoint. |

Isosceles Triangle | triangle that has at least 2 congruent sides |

Equilateral Triangle | triangle with all 3 congruent sides. |

Sum of angles in a triangle | 180 degrees |

Complimentary Angles | Sets of angles that add up to 90 degrees. |

Supplementary Angles= | Sets of angles that add up to 180 degrees |

Triangle | A shape with 3 sides and 3 angles. The sum of the angles is 180 degrees. |

Created by:
christine_gonzales