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Across
  1. 5. 1. A long thin mark on a surface. 2. A continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point. 3. Long, narrow mark or band.
  2. 7. Lines that intersect to form right angles
  3. 14. a ray that divides an angle into two congruent angles
  4. 19. If B is between A and C, then AB + BC = AC
  5. 20. a segment, ray, line, or plane that intersects a segment at its midpoint
  6. 25. A triangle that contains only angles that are less than 90 degrees.
  7. 26. A pair of adjacent angles whose noncommon sides are opposite rays.
  8. 28. points that lie on the same plane
  9. 30. The angle formed by the legs of an isosceles triangle.
  10. 32. y=mx + b (m is the slope, b is the y intercept point)
  11. 33. Angles formed by a transversal cutting through 2 or more lines that are in the same relative position.
  12. 34. How far it is from one point to another
  13. 35. The sum of the measures of the interior angles of a triangle is 180 degrees
  14. 37. rays part of a line that starts at one endpoint and extends foreve
  15. 38. two interior angles on the same side of the transversal
  16. 39. If P is in the interior of <RST, then m<RSP + m<PST = m<RST
Down
  1. 1. The point where the graph crosses the y-axis
  2. 2. a line that intersects two or more coplanar lines at different points
  3. 3. Two angles that share a common side and have the same vertex
  4. 4. A point that divides a segment into two congruent segments
  5. 6. A triangle with one angle that is greater than 90 degrees.
  6. 8. lines in the same plane that never intersect
  7. 9. a triangle with at least two congruent sides
  8. 10. A part of a line with two endpoints
  9. 11. A pair of opposite congruent angles formed by intersecting lines
  10. 12. Two angles whose sum is 180 degrees
  11. 13. If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.
  12. 15. a triangle with no congruent sides
  13. 16. angles between 2 lines and on opposite sides of a transversal
  14. 17. A triangle with three congruent sides
  15. 18. If two angles and a non-included side of one triangle are congruent to two angles and a non-included side of another, then the two triangles are congruent.
  16. 21. a triangle with one right angle
  17. 22. Angles that lie outside a pair of lines and on opposite sides of a transversal.
  18. 23. angles Two angles whose measures add to 90 degrees.
  19. 24. All congruent sides and angles
  20. 27. Points that lie on the same line
  21. 29. Having the same size and shape
  22. 31. If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent.
  23. 36. If a hypotenuse and leg of one right triangle are congruent to the corresponding hypotenuse and leg of a second right triangle, then the triangles are congruent.