| A | B |
|---|
| base (of a parallelogram) | A side of a parallelogram from which the height is measured. |
| base (of a triangle) | A side of a triangle from which the height is measured. |
| compose | To make by combining parts. You can put together numbers to make a greater number or shapes to make a new shape. |
| decompose | To break into parts. You can break apart numbers and shapes. |
| dimension | Length in one direction. A figure may have one, two, or three dimensions. |
| Height (of a parallelogram) | The perpendicular distance from a base to the opposite side. |
| Height (of a triangle) | The perpendicular distance from a base to the opposite vertex. |
| parallelogram | A quadrilateral with opposite sides parallel and equal in length. |
| perimeter | The distance around a two-dimensional shape. The perimeter is equal to the sum of the length of the sides |
| perpendicular | Meeting to form right angles. |
| polygon | A two-dimensional closed figure made with three or more straight line segments that meet only at their endpoints. |
| Trapezoid (exclusive) | A quadrilateral with exactly one pair of parallel sides. |
| Trapezoid (inclusive) | A quadrilateral with at least one pair of parallel sides. |
