Across
- 2. line segment from its center to its perimeter
- 4. greater than 90 degrees
- 6. a polygon with 3 edges and 3 verticles
- 8. proportion of a circles circumference lying between 2 points
- 9. a figure formed by 2 rays
- 10. the region inside a circle lying between 3 radii of the cicle
- 12. any flat surface on a 3-dimensional figure
- 15. the longest side of a right triangle
- 16. perimeter of a circle
- 17. all sides and angles are congruent
- 18. the outline or boundary of an object
Down
- 1. a quadrilateral with the reflection of symmetry across a diagonal
- 3. less than 90 degrees
- 5. a shape consisting of all points in a plane that are at a given distance from a given point, the center
- 7. a straight one-dimensional figure with an infinite length
- 9. the amount of space of a 2-dimensional shape
- 11. 2 figures or objects that are the same shape and size
- 13. line segment that has both endpoints on the circumference
- 14. a quadrilateral with 4 right angles
- 17. a quadrilateral with 2 pairs of parallel sides