Definition | PG Term |

HL | |

The point where three angle bisectors intersect in a triangle | |

A segment that connects the midpoints of a triangle or trapezoid. | |

A triangle with three congruent angles. | |

A line segment has two... | |

Two angles whose sides form two pairs of opposite rays. The angles form an 'X'. | |

Points that lie in the same plane. | |

The point where three altitudes intersect in a triangle | |

Two angles that share a common vertex and side. | |

Two angles that are formed by parallel lines and a transversal and lie between the parallel lines and on opposite sides of the transversal. | |

An angle whose measure is between 90 and 180 degrees. | |

a segment drawn from a vertex perpendicular to the opposite side | |

Points that line in the same plane | |

The 'if' part of a conditional statement. | |

An angle that measures 180 degrees. | |

a ray that divides an angle into two angles that are congruent. | |

(y2-y1)/(x2-x1) | |

A triangle with at least 2 congruent sides and angles. | |

Two adjacent angles who are supplementary | |

Two lines that do not intersect and are coplanar. | |

A triangle with three congruent sides | |

y=mx+b | |

A triangle with one obtuse angle | |

A polygon with three sides | |

An angle whose measurement is between 0 and 90. | |

Points that lie on the same line. | |

An angle whose measure is equal to 90 degrees | |