Geometry Semester 1 Vocabulary

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Across
  1. 4. A figure has one or more of these if it can be mapped onto itself by a reflection in a line.
  2. 6. A pair of sides or angles that have the SAME relative POSITION in two congruent figures.
  3. 7. Points that represent the ends of a line segment or starting point of a ray.
  4. 11. Coplanar lines that do not intersect
  5. 13. The set of points that two or more figures have in common.
  6. 17. A transformation that moves/flips a figure over a line; the resulting figure is a mirror image.
  7. 18. Two lines that intersect to form a right angle.
  8. 21. An angle that has a measure greater than 90⁰ and less than 180⁰.
  9. 22. Two angles that are formed by two lines and a transversal that are in corresponding/ same positions.
  10. 30. A logic argument that for each statement there is a reason for it.
  11. 31. A ray that divides an angle into two angles that are congruent.
  12. 33. A function that moves or changes a figure in some way to produce a new figure.
  13. 34. Two adjacent angles whose non-common sides are opposite rays
  14. 37. A figure that results from the transformation of a geometric figure.
  15. 39. A location in space that is represented by a dot and has no dimension.
  16. 40. Lines that do not intersect and are not coplanar.
  17. 42. Points that lie on the same plane.
  18. 43. The two angles adjacent to the base of an Isosceles Triangle.
  19. 45. The two congruent sides of an isosceles triangle.
  20. 46. An angle that has a measure of 180⁰.
  21. 47. The region that contains the points BETWEEN the sides of an angle.
  22. 49. Two angles (formed by 2 intersecting lines) whose sides form two pairs of opposite rays. (They form an X)
  23. 50. A flat surface made up of points that has two dimensions and extends without end, and is represented by a shape that looks like a floor or a wall.
Down
  1. 1. Two angles that are formed by two lines and a transversal that are outside the two lines and on opposite sides of the transversal.
  2. 2. The region that contains all the points OUTSIDE of an angle.
  3. 3. Angles of a polygon.
  4. 5. One dimension. It is represented by a line with two arrowheads, but it extends without end.
  5. 8. Two rays that share a common endpoint and form a straight angle.
  6. 9. A line that intersects two or more coplanar lines.
  7. 10. An angle that measures 90⁰.
  8. 12. A line that acts as a mirror for a reflection.
  9. 14. Angles or segments that have the same measure.
  10. 15. Two angles that are formed by two lines and a transversal that are between the two lines and on opposite sides of the transversal.
  11. 16. Two angles whose measures have a sum of 90⁰.
  12. 19. A transformation that preserves length and angle measures (it does not change shape or size)
  13. 20. A triangle in which all sides are congruent.
  14. 23. A transformation in which a figure is turned about a fixed point.
  15. 24. An angle that has a measure greater than 0⁰ and less than 90⁰.
  16. 25. Points that lie on the same line.
  17. 26. The point that divides a segment into two congruent segments
  18. 27. The sides of an isosceles triangle that is not one of the legs.
  19. 28. A transformation that moves every point of a figure the same distance in the same direction.
  20. 29. Two angles that are formed by two lines and a transversal that lie between the two lines and on the same side of the transversal.
  21. 32. A line that is perpendicular to a segment at its midpoint.
  22. 35. Two angles that share a common vertex and side, but have no common interior points.
  23. 36. Two angles whose measures have a sum of 180⁰.
  24. 38. Consists of two endpoints and all the points between them.
  25. 41. Angles that form linear pairs with the interior angles of a polygon.
  26. 44. The angle formed by the legs of an Isosceles Triangle.
  27. 48. Has one endpoint and extents forever in one direction.