geometry test chap 1

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Across
  1. 4. two angles whose sum is 180 degrees
  2. 5. 2(pi)r
  3. 6. rays that share the same endpoint and extend in opposite directions
  4. 8. two angles with sides forming two opposite rays
  5. 10. (pi)radius squared
  6. 11. tow angles whose sum 90
  7. 13. a line with a single endpoint at extends infinetly in one direcion
  8. 14. points that lie on the same lie
  9. 15. a+b+c
  10. 17. no dimesion. represented as a dot
  11. 18. one dimensional figure that extends infinetly in two directions
  12. 19. a polygon that's both equilateral and equal-angular
  13. 20. 4 s(ides)
Down
  1. 1. bisector a point, ray, line, plane, or line segment that intersects a segment at its midpoint
  2. 2. 2L+2W
  3. 3. 1/2(b+h)
  4. 7. two adjacent angles if their non common sides are opposite rays. supplementary angle
  5. 9. s squared
  6. 10. points that lie on the same plane
  7. 12. 2 angles that share a common vertex and side
  8. 16. LxM
  9. 21. a set of points that figures have in common