Simple Geometry

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Across
  1. 4. line that intersect forming perfect right angles or 90° angles.
  2. 7. lines which pass through the same point.
  3. 9. a line that has a definite endpoint at either end.
Down
  1. 1. flat surface of infinite length.
  2. 2. a line that bends without any sharp turns.
  3. 3. is an exact location on a plane represented by a dot.
  4. 4. lines with the same slope that never intersect.
  5. 5. a collection of points that extend in definitely.
  6. 6. two rays that share the same end point.
  7. 8. is a line with a definite end point at one end and continues indefinitely at the other end.