Across
- 2. a triangle with two equal sides
- 3. a quadrilateral whose opposite sides are parallel and equal
- 5. being everywhere equidistant and not intersecting
- 8. a regular three-sided polygon
- 10. a point equidistant from the ends of a line or the extremities of a figure
- 12. the length of a closed curve of a circle
- 13. an angle less than 90 degrees but more than 0 degrees
- 14. an infinitely long abject with no width, depth, or curvature
- 15. the 90-degree angle between two perpendicular lines
Down
- 1. a four-sided polygon
- 4. the measure of a region's size on a surface
- 6. the space between two lines or planes that intersect
- 7. an angle between 90 and 180 degrees
- 9. a straight line from the center to the perimeter of a circle
- 11. a specific identifiable position in a continuum or series