| A | B |
|---|
| area | The amount of surface that a figure covers. |
| trapezoid | A quadrilateral that has only one pair of opposites sides that are parallel. |
| kite | A quadrilateral that has 2 pairs of adjacent sides that are equal in length. |
| rhombus | A quadrilateral that has opposite equal acute angles, opposite equal obtuse angles, and four equal sides. |
| square | A regular quadrilateral that has four equal sides and four equal angles. |
| rectangle | A quadrilateral that has two adjacent sides have equal length and four equal angles. |
| parrallelogram | A quadrilateral in which opposite sides parallel and congruent. |
| volume | The measure of space inside a solid figure. |
| surface area | The total area from all the surfaces of a figure. |
| perimeter | The distance around a figure. |
| triangle | A polygon with three sides, angles, and vertices. The sum of the interior angles is 180°. |
| straight angle | An angle whose rays form a straight line, measuring 180°. |
| right angle | An angle whose rays form 90°. |
| acute angle | An angle that measure between 0°-90°. |
| obtuse angle | An angle that measures between 90°-180°. |
| vertex | The point where several edges meet. |
| edge | The line segment where two faces of a polyhedron meet. |
| polyhedron | A 3-dimensional figure made of flat surfaces that are called faces. |
| faces | A flat surface of a polyhedron. |
| cylinder | A 3-dimensional figure that has two circular bases that are parallel and identical. |
| sphere | A 3-dimensional figure such that every point is the same distance from the center and has no base. |
| cone | A 3-dimensional figure that has one circular base. The points on this circle are joined to one point outside the base, some-times called the vertex. |
| rectangular prism | A polyhedron with two parallel rectangle-shaped faces and whose sides are rectangles. |
| triangular prism | A polyhedron with two parallel triangle-shaped faces and whose sides are rectangles. |
| square pyramid | A polyhedron whose base is a square and whose faces are triangles. |
| triangular pyramid | A polyhedron whose base is a triangle and whose faces are triangles. |
| rectangular pyramid | A polyhedron whose base is a rectangle and whose faces are triangles. |
| cube | a symmetrical three-dimensional shape, either solid or hollow, contained by six equal squares. |
| congruent | equivalent, identical in form |
| dimensions | a measurable extent of some kind, such as length, height, width, ... |
| net | A plane figure pattern which, when folded, makes a solid. |
