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# Unit 2 Vocab

### Math Expressions 6th grade Unit 2

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

Acute triangle | A triangle with three acute angles. An acute angle has a measure that is greater that 0 degrees and less than 90 degrees |

Area | The amount of surface covered or enclosed by a figure. Area is measured by finding the number of same size units of area required to cover a shape without gaps or overlaps |

Base of a parallelogram | Any side of a parallelogram can be the base. The base just must make a 90 degree angle with the height. |

Base of a rectangle | Any side of the rectangle can be the base. |

Base of a triangle | Any side of a triangle can be the base. The base just must make a 90 degree angle with the height. |

Complex Figure | A figure made by combining simple geometric figures, such as rectangles and triangles. |

Coordinates | Each point in the coordinate plane corresponds to an ordered pair of numbers called its coordinates |

Dimensions | The height, length, or width of a figure |

Height | The perpendicular distance from the base to a vertex that is not on the base. Finding this distance may require extending the base. |

Hexagon | A polygon with 6 sides |

Obtuse Triangle | A triangle with one obtuse angles. An obtuse angle has a measure that is greater that 90 degrees and less than 180 degrees |

Pentagon | A polygon with 5 sides |

Octagon | A polygon with 8 sides |

Perimeter | The distance around a figure |

Perpendicular | A quadrilateral in which both pair of opposite sides are parallel and angles are congruent |

Parallelogram | Lines, line segments, or rays are perpendicular if they form a right angle. A right angle measures 90 degrees |

Regular Polygon | A polygon with all sides the same length |

Rhombus | A parallelogram with all sides the same length |

Trapezoid | A quadrilateral with exactly one pair of parallel sides |

Right Trangle | A triangle with one right angle. |

Square centimeter (cm^2) | A unit of area equal to the area of a square with one-centimeter sides. |

Vertex | A point common to two sides of an angle or polygon, or 3 edges of a solid figure. The point of a pyramid. |

Created by:
bryank