Across
- 2. two lines that meet or intersect each other at right angles
- 4. a type of three-dimensional (3D) shape with flat sides.
- 6. is a quadrilateral whose four sides all have the same length
- 8. equal on both sides.
- 9. less than 90 degree
- 11. A shape with 5 sides
- 13. a location represented by a dot.
- 15. a flat, two-dimensional surface that extends infinitely far
- 17. must have equivalent opposite interior angles.
- 18. a straight line that is drawn from left to right or right to left
- 19. an infinitely thin, infinitely long collection of points extending in two opposite directions
Down
- 1. a pair of opposite angles formed by intersecting lines
- 3. a polyhedron for which the base is a polygon and all lateral faces are triangles
- 5. more than 90 degrees but less than 180 degrees
- 7. an angle that is 180
- 10. an angle of exactly 90 degrees
- 12. a quadrilateral with at least one pair of parallel sides
- 14. a shape with 6 sides
- 15. any closed curve consisting of a set of line segments (sides) connected such that no two segments cross
- 16. two lines that never intersect