Across
- 2. parallelogram with 4 congruent sides
- 5. A quadrilateral with four congruent sides and four congruent angles
- 7. An angle that is more that 180 but less than 360 degrees
- 9. To lines which go in the same direction but do not meet or curve
- 12. half a circle
- 13. Has no dimension, but can be visualized as a specific position in space and is usually represented by a small dot
- 14. An angular point of polygon or polyhedron
- 16. Part of a line that starts at a particular point and extends infinitely far in one direction
- 17. The sum of two angles that equal 90 degrees
- 19. line segment that joins to vertices in a polygon
- 21. A quadrilateral with at least one pair of parallel sides
Down
- 1. line segment joining two points on a curve
- 3. The sum of two angles that equal 180 degrees
- 4. It has four sides and four vertices
- 6. The distance around a figure
- 8. segment that passes through the center of a circle with both endpoints on the circle
- 9. both pairs of opposite sides parallel
- 10. Space Occupied by a flat shape
- 11. Same size and shape
- 15. The space occupied by an object
- 18. two rays with a common endpoint
- 20. segment that has one endpoint at the center and the other endpoint on the circle