Definition | PG Term |

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

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

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

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

A triangle with three congruent angles. | |

A polygon with three sides | |

Lines that do not intersect and are NOT coplanar | |

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

Two polygons such that their corresponding angles are congruent and the lengths of corresponding sides are proportional | |

A triangle with no congruent sides. | |

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

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

Points that lie in the same plane. | |

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

Two lines that intersect to form a right angle. | |

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

Points that lie on the same line. | |

two angles who sum is 180 degress | |

y=mx+b | |

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

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

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

ASA | |

The point where three perpendicular bisectors intersect in a triangle. | |

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

SAS | |

A triangle with one obtuse angle | |

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