Simple Machines

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Across
  1. 2. made of 2 inclined planes put together.
  2. 3. an inclined plane that wraps around a shaft.
  3. 6. a straight slanted surface.
Down
  1. 1. a stiff rod that rotates around a pivot point.
  2. 4. a modification of a pulley.
  3. 5. uses grooved wheels and a rope, belt or chain.