Term | Definition |
2-Dimensional | An object that has height and width. |
3-Dimensional | An object that has height, width, and depth. |
Bases of a Prism | The two faces formed by congruent polygons that lie in parallel planes, all of the other faces being parallelograms. |
Composing | Combining two or more geometric figures together into one figure. |
Cubic Units | Volume of the solids is measured in Cubic Units. |
Decomposing | subdividing a polygon |
Edge | The intersection of a pair of faces in a three-dimensional figure. |
Equilateral Triangle | A triangle which has all three of its sides equal in length. |
Face | One of the polygons that makes up a polyhedron. |
Fractional edge length | The length of each edge of the cube is a fraction. |
Isosceles Triangle: | A triangle which has two of its sides equal in length. |
Kite | A quadrilateral with two distinct pairs of equal adjacent sides. A kite-shaped figure. |
Lateral Faces | In a prism, a face that is not the base. |
Net | A two-dimensional figure that, when folded, forms the surfaces of a three-dimensional object. |
Parallelogram | A quadrilateral with both pairs of opposite sides parallel. |
Polygon | A number of coplanar line segments, each connected end to end to form a closed shape. |
Polyhedron | A 3-dimensional figure that has polygons as faces. |
Prism | A polyhedron with two parallel and congruent faces, called bases, and all other faces that are parallelograms. |
Quadrilaterals | Four coplanar line segments linked end to end to create a closed figure. A 4-sided polygon. |
Rectangle | A 4-sided polygon where all interior angles are 90°. |
Rectangular prism | A solid (3-dimensional) object which has six faces that are
rectangles. |
Rhombus | A quadrilateral with all four sides equal in length |
Right Triangle | A triangle where one of its interior angles is a right angle (90 degrees). |
Scalene Triangle | A triangle where all three sides are different in length. |
Square | A quadrilateral that has four right angles and four equal sides. |
Surface area | The total area of the 2-dimensional surfaces that make up a 3-dimensional object. |
Trapezoid | A quadrilateral which has at least one pair of parallel sides. |
Triangular prism | A prism whose bases are triangles. A solid (3-dimensional object what has five faces: three rectangles and two bases. |
Vertices | The common endpoint of two or more rays or line segments |
Volume | The amount of space occupied by an object. |