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# geometry

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

angles that have the same vertex and a common side but no interior points in common | adjacent angle |

two non-adjacent angles on opposite sides of two lines | alternate interior angles |

two angles whose measures total 90 degrees | complementary angles |

two angles whose measures total 180 degrees | supplementary angles |

non-adjacent angles formed by intersecting lines | vertical angles |

a flat surface that goes on forever in all directions | plane |

a figure that cannot be traced with the same starting and stopping points | open figure |

a figure in a plane that can be traced with the same starting and stopping points | closed figure |

a closed figure made of line segments that do not cross | polygon |

a point that is common to two sides of a polygon or an angle | vertex |

a line segment that connects one vertex to another vertex | diagonal |

an exact location in space | point |

a set of points that form a straight path extendending in opposite directions without end | line |

a part of a line that has one endpoint and continues without end in the other direction | ray |

a part of a ray or line that has two end points | line segment |

line segments that have the same length | congruent lines |

a five sided shape | pentagon |

a three sided shape | triangle |

a six sided shape | hexagon |

a four sided shape | quadrilateral |

a ten sided shape | decagon |

lines tht meet or cross each other | intersecting |

lines that never intersect | parallel lines |

lines that intersect to form a 90 degree angle | perpendicular lines |

a trangle that has no congruent sides | scalene |

a triangle with at least 2 congruent sides | isosceles |

a triangle with 3 congruent sides | equilateral |

a triangle with three acute angles | acute triangle |

a triangle with 1 right angle | right triangle |

a triangle with 1 obtuse angle | obtuse triangle |

a quadliteral with both pairs of opposite sides parallel and congruent | parallelogram |

a parallelogram with 4 congruent sides | rhombus |

a parallelogram with 4 right angles | a rectangle/square |

a quadliteral with 4 congruent sides | square |

a quadliteral that has exactly 1 pair of parallel sides | trapezoid |

a quadliteral that has 2 pairs of congruent adjacent sides | kite |

a closed figure having all points the same distance from the center | circle |

a ine segment that has endpoints on a circle | chord |

a chord that passes through the center of a circle | diameter |

a line segment that connects the center of a circle and a point on the circle. Its length is half the diameter | radius |

two points on a circle and the part of the circle between the two points | arc |

an angle whose vertex is the center of a circle | central angle |

a region enclosed by the two radii and an arc joining the endpoints of the radii | sector |

formula for adding all sides (2L+2W) | perimeter |

formula to multipy length times width (LxW) | area |

formula (LxWxH) | volume |

formula (1/2BH) | area of a triangle |

formula PiD (pi is 3/14) | circumference |

have the same shape, but not the same size | similar |

moves a figure in a straight line without turning or flipping it | translation |

turns a figure about a point | rotation |

creates a mirror image of a figure across a line | reflection |

a picture | image |

Created by:
belles