Across
- 4. Angle greater than 90 degrees
- 6. Two angles that are non-adjacent and are equal
- 9. Same size and shape
- 10. Line that cuts through a system of lines
- 12. Two angles that are adjacent and add to 180 degrees
- 13. Part of a line
- 14. Triangle with two congruent sides and angles
- 16. Lines that do not intersect
- 18. Tells us that all triangles add to 180 degrees
Down
- 1. Tells us that isosceles triangles have 2 congruent angles and sides
- 2. Angle less than 90 degrees
- 3. Study of shapes, angles, and lines
- 5. Triangle with three equal sides and angles
- 7. Angle that is 90 degrees
- 8. A triangle with 3 different sides and angles
- 11. Line that extends in one direction
- 15. Angle exactly 180 degrees
- 17. To add