1st Semester VOCAB

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Across
  1. 3. at least one diagonal is outside the polygon in order to make this
  2. 7. on the same plane
  3. 9. point on a segement that is the same distance from both enpoints
  4. 12. formed by two rays that share a common endpoint
  5. 13. on the same line
  6. 14. a polygon that is equiangular and equilateral
  7. 15. angles that share a vertex and common side & forms a line
  8. 17. triangle that has all three angles measuring between 0 and 90 degrees
  9. 18. if the measure of an angle is 30 degrees, the measure of its ______ angle is 330 degrees
  10. 19. congruent angles formed by two intersecting lines; share a common vertex; no common side
  11. 20. This is an example of the longest chord in a circle
  12. 23. Segment that connects one midpoint to another midpoint.
  13. 25. SSA and ________ cannot prove triangle congruency
  14. 28. Midpoint this property uses the following formula (two words)
  15. 29. same size and shape
  16. 31. A point where two angles begin or meet
  17. 32. two angles whose sum is 90 degrees
  18. 34. A triangle can be constructed if the sum of its two sides is _________than the third
  19. 35. segment consists of two endpoints & all points between them are collinear (two words)
  20. 37. The sum of the angles in a _________ is 1,080 degrees
  21. 39. line segment that connects two nonconsecutive vertices
  22. 40. a line segment joining a vertex to the midpoint of the opposing side
  23. 41. The _______ of the exterior angles of a n-gon is 360 degrees
Down
  1. 1. A _______ is a way to show something is true
  2. 2. point of concurrency for the angle bisectors in a triangle
  3. 4. arc that is larger than a semicircle
  4. 5. Sum Conjecture that states that the sum of all the angles in a triangle equal 180 degrees (two words)
  5. 6. Pairs angles that share a vertex and common side & forms a line (two words)
  6. 8. divides segment or angle into two congruent parts
  7. 10. two lines that do not intersect and are coplanar
  8. 11. Property in a proof that states that AB = AB
  9. 16. when a set of lines has a point in common
  10. 18. begins at a point and extends infinitely in one direction
  11. 21. point of concurrency for the perpendicular bisectos in a triangle
  12. 22. triangle whose angles and sides are all different
  13. 24. a line segment whose endpoints lie on the circle
  14. 26. a line segment through a vertex and perpendicular to a line containing the base
  15. 27. intersection that forms 90 degree angles
  16. 29. CPCTC: "__________ part of congruent triangles are congruent"
  17. 30. point of concurrency for the altitudes in a triangle
  18. 33. the sum of the two ______ interior angles is equal to the exterior angle
  19. 36. a line that intersects a circle at one point
  20. 38. This is half of the diameter