Across
- 4. a quadrilateral whose opposite sides are parallel and equal
- 7. a triangle that contains an obtuse interior angle
- 8. a quadrilateral with one pair of parallel sides
- 9. an angle less than 90 degrees but more than 0 degrees
- 11. a triangle with two equal sides
- 14. the 90 degree angle between two perpendicular lines
- 15. a triangle with equal sides and angles
- 16. measurement of an angle
- 17. a polygon with four equal sides and four right angles
- 19. a three-sided polygon
- 21. The amount of turn between two lines around their common point
- 22. a parallelogram with four right angles
- 23. the same size and shape
- 24. triangle a triangle whose interior angles are all less than 90 degrees
Down
- 1. a triangle where all the sides have different lengths
- 2. lines that run alongside but never touching one another
- 3. at a right angle to or from something
- 5. an angle between 90 and 180 degrees
- 6. a closed figure bounded by straight sides
- 10. a four-sided polygon
- 12. a triangle with one right angle
- 13. having the same value
- 18. height of a triangle; perpendicular from one side to the opposite interior angle
- 20. a parallelogram with four equal sides whos opposite interior angles are equal