Across
- 3. The middle of. The point halfway along.
- 5. a quadrilateral with 4 right angles and 4 congruent sides
- 7. angles that measure greater than 90 but less than 180 degrees
- 10. all the sides are equal and all the inside angles are equal
- 12. lying on the same plane
- 14. lines that never intersect and have the same slope
- 16. a flat surface that extends into infinity
- 17. part of a line that has a fixed starting point but no endpoint
- 18. A conditional statement ("if ... then ...") made by swapping the "if" and "then" statements
- 21. If a is a number, then. a = a
- 22. a triangle that has all its sides equal in length
- 23. A conditional statement ("if ... then ...") made by negating the "if" and "then" statements
- 24. a statement that can be written in the form “If P then Q,” where P and Q are sentences.
- 27. quadrilateral with 4 right angles and congruent opposite sides
- 28. angles that measure exactly 90 degrees
- 29. a line segment joining the vertex of the triangle to the mid-point of its opposite side
- 30. used to prove a conjecture is false
Down
- 1. a quadrilateral with two pairs of adjacent and congruent sides
- 2. distance around the exterior of a circle
- 4. lines that are not parallel and do not intersect
- 6. having two sides of equal length (Triangle or Trapezoid)
- 8. two angles whose sum is 180
- 9. a line or point that divides the line into two different or equal parts
- 11. two angles whose sum is 90
- 13. angles that measure less than 90 degrees
- 15. if a = b and b = c, then a = c
- 16. distance around the exterior of a polygon
- 18. A conditional statement ("if ... then ...") made by negating and swapping the "if" and "then" statements
- 19. lying on the same line
- 20. the perpendicular line drawn from the vertex of the triangle to the opposite side
- 25. a quadrilateral with only one pair of parallel sides
- 26. a quadrilateral with all equal sides and two sets of opposite congruent angles
- 31. A line segment joining the midpoints of two sides of a triangle