Across
- 5. when two adjacent angles add to 180 degrees
- 6. a quadrilateral where all sides are equal
- 9. how far a line travels
- 11. the sum of the three angles in every triangle
- 13. any two angles that are equal, outside parallel lines and on opposite sides of a transversal
- 15. a shape where all of its angles are equal
- 16. a triangle with two equal sides and all angles less than 90 degrees
- 17. a line that is not vertical or horizontal
- 20. a line that travels in only one direction and starts at an end point
- 21. a quadrilateral where each pair of opposite sides are parallel and all angles are right
- 22. a shape where two sides are the same length
Down
- 1. an angle that is more than 90 degrees
- 2. a quadrilateral where each pair of opposite sides are parallel
- 3. the measure of any angle in an octagon
- 4. two line that intersect to make 4 right angles
- 7. a triangle with no equal sides and one angle greater than 90 degrees
- 8. two lines that are travelling apart from one another
- 10. the measure of any angle in an equilateral triangle
- 12. two angles that share a vertex, but not sides, and are across from one another and equal
- 14. a line that cuts across two parallel lines
- 18. a quadrilateral with two parallel sides
- 19. a line that is up and down or "plumb"