The fan blades.
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my flappy noodle
You could find an inclined plane in a skate park because of all the ramps.
If you consider one blade and extrapolate it, it becomes an archemides screw (an inclined plane wrapped around a core.)
a hatchet is a inclined plane
A ramp is an inclined plane because an inclined plane is a set of a surface set at an angle that is not a right angle. In which a ramp is an inclined plane!