Across
- 3. convince someone that a proposition is true using logical arguments
- 7. a statement
- 10. angles that add up to 90 degrees
- 11. a line that cuts another line in two pieces
- 13. use logical steps to show something is true in all cases
- 15. a straight collection of points that travels in both directions forever
- 16. matches up
- 19. outside two parallel lines
- 21. in between two parallel lines
- 24. next to
- 25. a unit of measure for angles
- 26. a shape having 360 degrees
Down
- 1. the result of a subtraction
- 2. two lines that never touch
- 4. in a row
- 5. angles that add up to 180 degrees
- 6. having a position on the other side of something
- 8. ______ Angle is a pair of opposite angles across the intersection of two lines
- 9. a point where two lines meet
- 12. the result of an addition
- 14. appearing on different sides of a line
- 17. two lines meet at a right angle
- 18. the study of shapes
- 20. ______ Angle is a 90 degree angle
- 22. a line with one end point
- 23. the space between two intersecting lines measured in degrees