| Answer | Crossword Clue |
|---|---|
| side | bounding line of a geometric figure side of a triangle |
| simplex | basic geometric element in a Euclidean space, being a line segment in one dimension, a triangle in two dimensions, a tetrahedron in three dimensions, and so on: used in topology and linear programming |
| altitudes | The length of the perpendicular line from a vertex to the opposite side of a figure |
| diameter | A straight line passing from side to side through the center of a body or figure, esp. a circle or sphere |
| diameters | A straight line passing from side to side through the center of a body or figure, esp. a circle or sphere |
