Geometry

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Across
  1. 1. is a line with a single endpoint (or point of origin)that extends infinitely in one direction.
  2. 4. point in common of two rays that form an angle
  3. 6. the middle point of the line segment
  4. 8. an angle whose measure is greater than 90 and less than 180
Down
  1. 2. angle whose measure is less than 90
  2. 3. two end points and all the points in between them
  3. 5. the set of all points collinear to two points
  4. 7. a flat figure with no thickness that extends indefinitely in all directions