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# pre-alg terms

### gr. 7P re-algebra terms

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

two rays with a common end point | angle |

less than 90 angles and greater than zero | acute |

line that intersects two parallel lines to form eight angles | transversial |

ten sides | decagon |

an angle with a measure equal to 180 degrees | straight |

a transformation where a figure is flippled over a line (flip) | reflection |

where three or more planes intersect in a point | vertex |

(next to)two angles that have the same vertex share a common side and do not overlap | adjacent |

a quadrilateral with exactly one pair of parallel sides | trapezoid |

a never ending straight path | line |

the most common unit of measure for angles | degrees |

a parallelogram with all sides congruent and four right angles | square |

line segments that have the same length, or angles that have the same measure, shape, or size (clone) | congruent |

a parallelogram with four right angles | rectangle |

circle | 360 degrees |

twelve sides | dodecagon |

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

two angles are ______ if the sum of their measures is 90 degrees | complementary |

a polygon having three sides | triangle |

a polygon having all sides congruent and all angles congruent | regular polygon |

lines that intersect to form a right angle | perpendicular |

part of a line contraining two endpoints and all the points between them | line segment |

triangle with all sides congruent | equilateral |

two angles are ______ if the sum of their measures is 180 degrees | supplementary |

a closed figure with four sides and four vertices, including squares, rectangles, and trapezoids | quadrilateral |

a quadrilateral with opposite sides parallel and congruent | parallelogram |

having five sides | pentagon |

having eight sides | octagon |

a transformatin where a figure is slid from one position to another without being turned (slide) | translation |

an angle with a 90 degree measure | right |

having the same value | equal |

a simple closed figure in a plane formed by three or more line segments | polygon |

a triangle that has at least two congruent sides | isosceles |

a parallelogram with four congruent sides | rhombus |

having seven sides | heptagon |

an instrument used to measure angles | protractor |

a triangle with no congruent sides | scalene |

a part of a line that extneds indefinitely in one direction | ray |

having nine sides | nonagon |

having six sides | hexagon |

a transformation where a figure is turned around a fixed point (turn) | rotation |

an angle from 91 degrees to 179 degrees | obtuse |

lines that are in the same plane that do not intersect | parallel |

straight line | 180 degrees |

Created by:
fhershey