Across
- 3. The line segment between two points on a given curve.
- 5. Lines that never intersect.
- 6. A straight line going through a circle that meets the circumference or surface at each end.
- 8. One part of a line.
- 9. A triangle with all equal angles and sides.
- 14. A continuous extent of length.
- 18. Line segments that cross each other.
- 19. A polygon having eight angles and eight sides.
- 20. A quadrilateral having both pairs of opposite sides parallel to each other.
Down
- 1. A triangle that has two equal sides.
- 2. A triangle having three unequal sides and angles.
- 4. Any angle greater than 90 degrees.
- 7. A triangle with one internal angle equal to 90 degrees.
- 10. An angle less than 90 degrees but greater than 0 degrees.
- 11. A polygon with 5 sides and 5 angles.
- 12. A rectangle having all sides of equal length.
- 13. The abbreviation for "corresponding parts of congruent triangles are congruent".
- 15. A position in space.
- 16. The intersection point of two sides on a plane figure.
- 17. An angle that goes up to 90 degrees.