As an addendum, I thing it's awesome and cute and I quite enjoyed it. It's just not very accurate wrt to math or science and I'm a bit of a stickler, if this were to be used as a teaching tool or as an example of science.
Not enough of a nerd. Maybe spend more time listening in Math Class or just stick with art.
#1 It's called and Inclined Plane not an Incline Plane
#2 A triangle, in a 2-D Cartesian Coordinate System, is NOT a Plane, it's just a triangle. The entire 2-D space is the Plane.
#3 3-D plane is an Oxymoron. A Plane by definition is 2-D. You have simply drawn a 2-D plane in a 3-D space, and it's the same exact plane you should have drawn for your 2-D space.
#4 A 3-D Snake cannot be on (or in) a 2-D plane, as it has no third dimension. Only a 2-D projection of said snake can be "on a plane." So either a 2-D cartoon snake drawing or, more simply, just a squiggly line. For a 3-D snake to be on a 3-D plane, the plane kinda needs to be an aeroplane instead as its the only 3-D plane of which I am familiar, other than an actual Inclined Plane, that you only drew in 2-D but is, in reality, 3-D and thus, a 3-D Plane.
Also, I highly suggest you read the book "Flatland", if it is science, math, physics, engineering et. al. (and not art) you wish to pursue