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# Geometry

### Stack #70568

Description | Name |
---|---|

All 3 sides are the same length. | Equilateral Triangle |

Only 2 of the 3 sides are the same length. | Isosceles Triangle |

None of the 3 sides are the same length. | Scalene Triangle |

When 2 lines meet and form a 90 degree angle. | Right Angle |

When 2 lines meet and form a less than 90 degree angle. | Acute Angle |

When 2 lines meet and form a greater than 90 degree angle. | Obtuse Angle |

A line that has 2 endpoints. | Line Segment |

A line that has only 1 end point. | Ray |

Two lines that never intersect each other. | Parallel Lines |

Two lines that intersect and form 90 degree angles. | Perpendicular Lines |

Two lines that cross and don't form 90 degree angles. | Intersecting Lines |

Two figures that are the same shape and size. | Congruent Figures |

Two figures that are the same shape but not the same size. | Similar Figures |

3 sided polygons | Triangles |

4 sided polygons | Quadrilaterals |

5 sided polygons | Pentagons |

6 sided polygons | Hexagons |

8 sided polygons | Octagons |

A closed plane figure made up of line segments. | Polygon |

A figure that has length, width, height, and volume. | Solid Figures |

A line on which a figure can be folded so that both halves are congruent. | Line of Symmetry |

Similar to a square but has no right angles and has 2 pairs of parallel sides. | Rhombus |

A figure that has only 1 pair of parallel sides. | Trapezoid |

Similar to a rectangle but has no right angles and 2 pairs of parallel sides. | Parallelogram |

To turn a plane figure over. | Flip (REFLECTION) |

To rotate a plane figure. | Turn (ROTATION) |

To move a plane figure in one direction. | Slide (TRANSLATION) |

A triangle with a right angle. | Right Triangle |

A triangle with all acute angles. | Acute Triangle |

A triangle with an obtuse angle. | Obtuse Triangle |

The common endpoints of two lines forming an angle. | Vertex (Plural - Vertices) |

The distance around a figure. (L + W + L + W = ?) | Perimeter |

The number of square units needed to cover a figure. (L x W = ?) | Area (square____) |

The number of cubic units needed to fill a solid. (L x W x H = ?) | Volume (cubic___) |

Name the 7 solids that we studied. | Sphere, Cube, Rectangular Prism, Triangular Prism, Cylinder, Pyramid and Cone |

Name the plane figue that is not a polygon. | Circle |

Created by:
pam1