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# Chapter 8 Vocab

### Math

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

An exact location that is usually represented as a dot | Point |

A straight path that extends without end in opposite directions | Line |

A perfectly flat surface that extends infinitely in all directions | Plane |

A part of a line, it has one endpoint and without end in one direction | Ray |

A part of a line or a ray that extends from one endpoint to another | Line Segment |

The same shape and size | Congruent |

2 rays with a common endpoint | Angle |

The common endpoint | Vertex |

The sum of the measures of two angles that is 90 degrees | Complementary Angles |

The sum of the measures of two angles that is 180 degrees | Supplementary Angles |

Angles formed by two intersecting lines that measure 90 degrees | Perpendicular Lines |

Lines in the same plan that do not intersect at all | Parallel Lines |

Lines that don't intersect, but they are also parallel | Skew Lines |

Angles that have a common vertex and a common side but not common interior points | Adjacent Angles |

Angles that are opposite formed by two intersecting lines | Vertical Angles |

A line that intersects 2 or more lines | Transversal |

Angles that are on the same side of the transversal and are both above or below the parallel lines | Corresponding Angles |

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

The point inside a circle that is the same distance from all the points on the circle | Center of a Circle |

Part of a circle named by its endpoints | Arc |

Line segment whose endpoints are the center of a circle and any point on the circle | Radius |

Line segment that passes through the center of a circle, and whose endpoints lie on the circle | Diameter |

Line segment whose endpoints are any two points on a circle | Chord |

An angle formed by 2 radii | Central Angle |

The part of the circle enclosed by 2 radii and an arc connecting them | Sector |

A closed plane figure formed by 3 or more line segments | Polygon |

A polygon in which all sides are congruent and all angles are congruent | Regular Polygon |

A shape that both pairs of opposite sides are parallel and congruent. Both pairs of opposite angles are congruent | Parallelogram |

A parallelogram with four right angles | Rectangle |

A parallelogram with 4 congruent sides | Rhombus |

A parallelogram with 4 congruent sides and four right angles | Square |

A shape which exactly one pair of opposite sides is parallel | Trapezoid |

A rule stating that if three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent | Side-Side-Side Rule |

The resulting figure of a transformation | Image |

When a figure is not symmetrical | Asymmetry |

The central point | Center of Rotation |

Transformation that changes the size, but not the shape, of a figure | Dilation |

Created by:
Ksmart