Lines and Triangles

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Across
  1. 5. angles that are in opposite positions relative to a transversal intersecting two lines.
  2. 7. are the angles opposite each other when two lines cross.
  3. 8. has 360 degrees.
  4. 9. a line that passes through two lines in the same plane at two distinct points.
  5. 10. the pairs of angles on either side of the transversal and inside the two lines
  6. 12. an angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines.
  7. 13. If two parallel lines are cut by a transversal, then the alternate interior angles formed are
Down
  1. 1. angles that add up to 180 degrees.
  2. 2. lines, planes, surfaces, or objects) side by side and having the same distance continuously between them.
  3. 3. a straight line at an angle of 90° to a given line, plane, or surface.
  4. 4. when a transversal cuts through 2 parallel lines, these angles are outside the parallel lines.
  5. 6. angles that add up to 90 degrees.
  6. 9. a polygon with three edges and three vertices.
  7. 11. the angles which occupy the same relative position at each intersection where a straight line crosses two others.