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# Geometry MATH

### math that is geometry

Question | Answer |
---|---|

Adjacent Angles | Angles that share a vertex and a side but have no interior points in common |

Angle Bisector | A ray that divides an angle into angles of equal measure |

Midpoint | The point that divides the segment into two segments of equal length |

Perpendicular Bisector | Lines that intersect to form right angles |

Plane | A flat surface that extendsn indefinely in all directions |

Regular Polygon | A polygon with all the sides congruent and all the angles congruent |

Segment | Two endpoints and all the points of the line between endpoints |

Segment Bisector | A line, segment, or ray that goes through the midpoint of a segment |

Acute Angle | an angle with a measure between 0 and 90 degrees |

Acute triangle | Has 3 acute angles |

Angle | formed by 2 rays with a common endpoint called a vertex |

Arc | part of a circle |

Central angle | an angle whose vertex is the center of a circle that equals a sum of 360 degrees. |

Chord | a segment that has both endpoints on a circle |

Circle | the set of points in a plane that are all the same distance from a given point called the center |

Circle graph | a graph of data where the circle represents the whole |

Compass | a geometric tool used to draw circles or arcs |

Complementary angles | 2 angles that are complimentary if the sum of their measures is 90 degrees |

Congruent angles | angles thhat have all the same length |

congruent polygons | 2 polygons that are congruent if they have exactly the same shape and size |

Congruent sides | have the same length |

decagon | a polygon with 10 sides |

Diameter | a segment that passes through the center of a circle and has both endpoints |

Equilateral triangle | a triangle |

hexagon | a ploygon with 6 sides |

intersecting lines | 2 or more lines that cross each other |

irregular polygon | a plygon with sides that are not all congruent and/or angles that are not all congruent |

isosceles triangle | a triangle with at least two congruent sides |

Line | a series of points that extends in 2 opposite directions without end |

Midpoint | the point that divides the segment into two segments of equal length |

obtuse angle | an angle with a measure greater that 90 degrees and less than 180 degrees |

obtuse triangle | a triangle with an obtuse angle |

octagon | a ploygon with 8 sides |

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