Across
- 1. an angle that is exactly 180°
- 4. a triangle with two equal sides
- 6. an angle that is exactly 90°
- 7. a 5-sided polygon
- 9. lines that stay the same distance from each other forever and never intersect
- 12. lines that cross at a point and form 90°angles
- 13. an 8-sided polygon
- 18. the angles on then outside of a figure when the sides are extended
- 21. a point where two or more lines come together; also called a corner on a polygon
- 22. a 6-sided polygon
- 26. two angles that are formed with a common side
- 27. angles that are across from each other; they do not share a side or vertex
- 29. an angle that is more than 90° and less than 180°
- 30. a line that cuts across a figure connecting two vertices that are not adjacent
- 31. contains two sets of parallel sides that form four 90° angles; all sides are congruent
- 32. contains two sets of parallel sides
Down
- 2. a triangle with three equal sides
- 3. two angles that add up to 90°
- 5. a quadrilateral that contains one set of parallel sides; also contains two opposite congruent sides
- 8. A triangle with all acute angles
- 10. two angles that add up to 180°
- 11. a word meaning equal or same; it is used to describe figures, sides, and angles
- 14. A triangle with one obtuse angle
- 15. contains two sets ofparallel sides that formfour 90° angles
- 16. the angles inside of a figure; in a triangle, these add up to 180°
- 17. a quadrilateral that contains on set of parallel sides and contains two right angles
- 19. A triangle with one right angle
- 20. a triangle with no equal sides
- 23. an angle that is less than 90°
- 24. contains two sets of parallel sides that are all congruent
- 25. lines that cross at a point
- 28. a four sided polygon; angles total 360°