Across
- 2. Straight path extending infinitely both ways.
- 4. Case that proves a statement false.
- 7. Angle formed by extension of adjacent side.
- 14. Part of a line with one endpoint.
- 16. A statement accepted as true without proof.
- 17. An angle measuring exactly 90°.
- 18. Two lines in a plane that never intersect.
- 19. Line or ray dividing something in half.
- 20. An angle inside a polygon.
- 26. Switches the “if” and “then” parts.
- 27. Negates both the “if” and “then” parts.
- 28. If p→q is true and p is true, then q is true.
- 29. Adjacent angles that form a straight line.
- 30. Interior angles on opposite sides of transversal.
- 31. Set containing all elements of multiple sets.
- 32. Two angles that sum to 180°.
- 33. Flat surface extending infinitely in 2D.
- 34. Two angles that sum to 90°.
Down
- 1. Set containing only common elements of sets.
- 3. Exterior angles on the same side of transversal.
- 5. A statement that has been proven true.
- 6. A part of a line with two endpoints.
- 8. Exterior angles on opposite sides of transversal.
- 9. A line that crosses two or more lines.
- 10. If p→q and q→r, then p→r.
- 11. Switches and negates both the “if” and “then” parts.
- 12. An angle measuring less than 90°.
- 13. A conditional and its contrapositive are equivalent.
- 15. Angles in the same relative position at intersections.
- 21. An angle between 90° and 180°.
- 22. Interior angles on the same side of transversal.
- 23. Uses the phrase “if and only if”.
- 24. Opposite angles formed by intersecting lines.
- 25. Two lines intersecting at 90°.