Definition | PG Term |

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

Points that lie on the same line. | |

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

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

A line segment has two... | |

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

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

Points that lie in the same plane. | |

The point where 3 medians intersect. | |

a dot. | |

Two angles whose sum is 90 degrees. | |

Lines that do not intersect and are NOT coplanar | |

A segment that is drawn from the center of a circle to the circle. | |

A point that divides, or bisects, a segment into two congruent segments. | |

The point where three altitudes intersect in a triangle | |

A triangle with one obtuse angle | |

SSS | |

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

An angle that measures 180 degrees. | |

y-y1=m(x-x1) | |

A triangle with no congruent sides. | |

y=mx+b | |

Two adjacent angles who are supplementary | |

two angles that are formed by parallel lines and a transversal and occupy corresponding positions | |

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

An angle whose measure is equal to 90 degrees | |

two angles who sum is 180 degress | |