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# Covering & Surround

### Covering & Surrounding

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

Area | The measure of the amount of surface enclosed by the boundary of a two-dimensional figure. Example: painting a wall, carpeting a floor) |

Perimeter | The measure of the distance around a two-dimensional figure. Example: Fencing around a garden, trim along the walls) |

Scalene triangle | A triangle with no sides of the same length |

Surface Area | The total area of all the faces of a three-dimensional shape |

Vertex | The corner of a polygon |

Volume | The measure of space occupied by a three-dimensional shape; the number of unit cubes that will fit inside a three-dimensional shape |

Edge | A line segment that is formed where two faces of a three-dimensional figure meet |

Equilateral triangle | A triangle with all three sides of the same length |

Face | A flat, two-dimensional surface of a three-dimensional shape |

Isosceles triangle | A triangle with two sides of the same length |

Net | A two-dimensional pattern that can be folded into a three-dimensional figure |

Regular polygon | A polygon with all of its angles AND side lengths equal |

Right triangle | A triangle with one right angle |

Obtuse triangle | A triangle with one obtuse angle |

Acute triangle | A triangle with all acute angles |

Right angle | An angle that measures exactly 90 degrees |

Perpendicular lines | Two lines that intersect to form right angles |

Parallel lines | Two lines that will never intersect |

Polygon | A closed shape formed by line segments, called sides (striaght lines, no intersections, closed figure) |

Prism | A three-dimensional shape with a top and bottom base that are congruent polygons and all other sides are parallelograms |

Pyramid | A three-dimensional shape with one polygonal base and all other triangular sides that meet at a vertex opposite the base |

Adjacent | Means "next to" |

Congruent | Having the exact same size and shape |

Similar | Describes figures that have the same shape, but not necessarily the same size, corresponding sides are proportional in length |

Parallelogram | A quadrilateral with two pairs of parallel sides (opposite sides are also congruent) |

Trapezoid | A quadrilateral with at least one pair of opposite sides that are parallel |

Rhombus | A quadrilateral that has all sides of the same length |

Square | A quadrilateral with all sides of the same length and four right angles |

Quadrilateral | A polygon with four sides |

Height | The perpendicular distance from a vertex to the opposite side (base) of a figure |

Created by:
vinborg