Across
- 2. lines that do not intersect and are not parallel
- 4. angles that add up to 90 degrees
- 5. 2-dimensional shape that can fold into a 3-dimensional shape
- 7. lines that intersect each other at a right angle
- 9. lines that never intersect each other
- 13. an angle equal to 180 degrees
- 14. angles that are right next to one another
- 15. lines that touch one another
- 16. formed by 2 rays, lines, or segments at their intersection
- 17. the midpoint of a segment bisector is the point at which the lines are divided into two halves
- 18. a straight path that extends forever in both directions
- 19. an angle more than 90 degrees
- 20. a location represented by a dot
Down
- 1. part of a line that has two end points
- 2. angles that add up to 180 degrees
- 3. an angle less than 90 degrees
- 6. part of a line that has one end point
- 8. tool to measure angles
- 10. an angle equal to 90 degrees
- 11. the sum of the lengths of two segments is equal to the third segment
- 12. a flat surface that extends forever in all directions