Across
- 4. A line that goes from one corner to the other
- 7. Formed by two chords that share an endpoint
- 9. Relationship between things in equal ratios
- 11. Lines that meet at a vertex
- 13. All edges point outwards
- 15. Half of a circle
- 17. When things are identical in form
- 18. How much of something a 3d shape can hold
- 19. The height of an object
- 20. A portion of the circumference of a circle
Down
- 1. Adjacent divided by the hypotenuse
- 2. Three or more points which lie in the same plane
- 3. A segment connecting the midpoints of the sides
- 5. A triangle with 3 acute angles
- 6. Line segment joining a vertex to the midpoint
- 8. A triangle with 2 sides that are the same
- 10. A line that splits an angle into two equal angles
- 12. A line segment connecting two points on a curve
- 14. The study of triangles
- 16. A number that can't be made by dividing 2 integers