Across
- 4. A four-sided figure
- 5. A polyhedron of which one face is any polygon, and the other faces are triangles with a common vertex
- 6. Having all sides of a triangle different lengths
- 7. Shapes that are identical
- 9. An imaginary line that divides a shape into two equal halves
- 10. The total area that the surface of a shape takes up
- 12. one point
- 15. The intersection of the sides of a shape
- 16. The amount of space that a shape occupies
- 19. A angle that's vertex is the center of the circle and its sides are both radii
- 20. A line segment that intersects a circle
- 21. To share a commons vertex and side
- 22. A perpendicular line from one side of a shape to the opposite vertex
- 24. A triangle having two sides of equal length
- 25. The point where the perpendicular bisectors of the sides of a triangle intersect
Down
- 1. The distance around a circle
- 2. A four-sided shape with opposite sides parallel
- 3. Having all its sides of the same length
- 7. A line segment that intersects two points of a circle
- 8. The intersection of the three medians of a triangle
- 11. A line that goes through an angle exactly in the middle
- 12. An angle that is less than 90 degrees
- 13. An angle that is greater than 90 degrees
- 14. An angle that is 90 degrees
- 17. Lines that will never intersect and are the same distance from one another always
- 18. The center of an inscribed circle inside a triangle
- 23. The intersection of the three altitudes of a triangle