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# April 2022 vocab

Term | Definition |
---|---|

polygon | a closed 2-D figure made up of straight line segments |

triangle | a polygon with 3 sides and angles |

quadrilateral | a polygon with 4 sides and angles |

pentagon | a polygon with 5 sides and angles |

hexagon | a polygon with 6 sides and angles |

heptagon | a polygon with 7 sides and angles |

octagon | a polygon with 8 sides and angles |

nonagon | a polygon with 9 sides and angles |

decagon | a polygon with 10 sides and angles |

isosceles triangle | a triangle with at least 2 sides of equal length |

scalene triangle | a triangle with no sides of equal length |

equilateral triangle | a triangle with 3 sides of equal length |

right triangle | a triangle with one 90 degree angle and two acute angles |

acute triangle | a triangle with all angles that measure less than 90 degrees |

obtuse triangle | a triangle with one angle that measures greater than 90 degrees |

parallelogram | a quadrilateral with opposite sides that are parallel and congruent |

rhombus | a parallelogram with 4 congruent sides |

rectangle | a parallelogram with 4 right angles |

square | a parallelogram with 4 congruent sides and 4 right angles |

(inclusive) trapezoid | a quadrilateral with at least one pair of parallel sides |

(exclusive) trapezoid | a quadrilateral with exactly one pair of parallel sides |

regular polygon | a polygon with all sides of equal length and all angles equal measure |

hierarchy | a ranking of categories based on attributes |

congruent | of equal measure |

quotient | the answer in a division problem |

sum | the answer in an addition problem |

product | the answer in a multiplication problem |

divisor | the number that is being divided by in a division problem |

factors | the numbers being multiplied in a multiplication problem |

dividend | the number that is being divided in a division problem |

addends | the numbers being added in an addition problem |

difference | the answer in a subtraction problem |

remainder | what is left over in a division problem, such as 12/5 |

multiples | any given number times every other number |