Definition | PG Term |

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

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

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

The point where three altitudes intersect in a triangle | |

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

Points that line in the same plane | |

SSS | |

The point where 3 medians intersect. | |

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

The side of a right triangle that is opposite the right angle. | |

HL | |

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 adjacent angles who are supplementary | |

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

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

An angle that measures 180 degrees. | |

Two angles formed by two parallel lines and a transversal that lie on the interior of the parallel lines and on the same side of the transversal. | |

An angle whose measure is equal to 90 degrees | |

The side opposite the right angle in a right triangle | |

A triangle with one obtuse angle | |

Points that lie on the same line. | |

two angles who sum is 180 degress | |

A triangle with three congruent sides | |

A polygon with three sides | |

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

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

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

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