Solve these clues to fill the grid.
- A point equidistant from the ends of a line or the extremities of a figure
- 1 Across
- A closed plane figure bounded by straight sides
- 6 Across
- The space between two lines or planes that intersect
- 8 Across
- A column of light
- 9 Across
- A geometric element that has position but no extension
- 10 Across
- A formation of people or things one beside another
- 12 Across
- A four-sided polygon
- 14 Across
- Serial arrangement in which things follow in logical order or a recurrent pattern
- 15 Across
- A straight line at right angles to another line
- 2 Down
- An aircraft that has a fixed wing and is powered by propellers or jets
- 3 Down
- An abstract idea of that which is due to a person or governmental body by law or tradition or nature
- 4 Down
- A parallelogram with four right angles
- 5 Down
- Rounded at the apex
- 7 Down
- A parallelogram with four equal sides
- 9 Down
- A three-sided polygon
- 11 Down
- The property created by the space between two objects or points
- 13 Down