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Unit 1 Vocabulary
| Term | Definition |
|---|---|
| area | The _____ of a two-dimensional region, measured in square units, is the number of unit squares that cover the region without gaps or overlaps. |
| region | Examples of two-dimensional _____ include the interior of a circle of the interior of a polygon. |
| rearrange/rearranging | We we decompose a figure into pieces and put them back together in a different way, we are _____ the pieces. |
| compose | _____ means "put together" several geometric figures together to make a new figure. |
| decompose | _____ means "take apart" several geometric figures. |
| parallelogram | A _____ is a four-sided polygon with two pairs of parallel sides. |
| base | Any of the four sides of a parallelogram can be chosen as a ______. The term _____ can also refer to the length of this side. |
| height of a parallelogram | Once you have chosen a base, then the perpendicular segment from a point on the base of a parallelogram to the opposite side will always have the same length. We call that value the ______. |
| opposite vertex | When you choose a side to be the base in a triangle, the vertex that is not an endpoint of the base is the ........... |
| base | Any of the three sides of a triangle can be chosen as a ........... The term .......... can also refer to the length of this side. |
| height | Once we have chosen a base, the corresponding ............ is the length of a perpendicular segment from the base to the vertex opposite it. |
| polygon | A ............... is a two-dimensional figure composed of a sequence of straight line segments, connected end-to-end, with the last one connecting back to the first. |
| side | A line segment in a polygon is called a ........... (it is also called an edge). |
| edge | A line segment in a polygon is called an ........... (it is also called a side). |
| sides | Sometimes the faces of a polyhedron are called its ........... |
| vertex | A .......... is a point where two edges meet in a polygon or a polyhedron. |
| quadrilateral | A .............. is a four-sided polygon. |
| surface area | The ........... (in square units) is the number of unit squares it takes to cover all the surfaces of a three-dimensional figure without gaps or overlaps. |
| face | Any flat surface on a three-dimensional figure is a ........... |
| net | A .......... is a two-dimensional representation of a polyhedron. It can be cut out and folded to make a model of the polyhedron. |
| pyramid | A ........... is a type of polyhedron that has one special face called the base. |
| prism | A ........... is a type of polyhedron with two parallel faces that are identical copies of each other (called bases) connected by rectangles. |
| polyhedron (polyhedra) | A ........... is a three-dimensional figure with faces that are polygonal regions (filled-in polygons). |
| square | An expression with an exponent of 2 is sometimes called a square. |
| cube | An expression with an exponent of 3 is sometimes called a ............ |
Created by:
MS.R
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