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2. Roll (gymnastics) - Wikipedia

   en.wikipedia.org/wiki/Roll_(gymnastics)

   A roll is the most basic and fundamental skill in gymnastics class. There are many variations in the skill. Rolls are similar to flips in the fact that they are a complete rotation of the body, but the rotation of the roll is usually made on the ground while a flip is made in the air with the hips passing over the head and without any hands touching the ground.

3. Mental rotation - Wikipedia

   en.wikipedia.org/wiki/Mental_rotation

   Example problem based on Shepard & Metzlar's "Mental Rotation Task": are these two three-dimensional shapes identical when rotated? Mental rotation is the ability to rotate mental representations of two-dimensional and three-dimensional objects as it is related to the visual representation of such rotation within the human mind. [1]

4. Turn (dance and gymnastics) - Wikipedia

   en.wikipedia.org/wiki/Turn_(dance_and_gymnastics)

   In dance and gymnastics, a turn is a rotation of the body about the vertical axis. It is usually a complete rotation of the body, although quarter (90°) and half (180°) turns are possible for some types of turns. Multiple, consecutive turns are typically named according to the number of 360° rotations (e.g., double or triple turn).

5. Anti-Rotation Exercises Offer an Underrated Way to Work ... - AOL

   www.aol.com/anti-rotation-exercises-offer...

   One prime example: anti-rotation exercises. Anti-rotation exercises refer to any exercise in which you’re resisting a rotational force, explains physical therapist Kate Bochnewetch, D.P.T., C.S ...

6. Euclidean plane isometry - Wikipedia

   en.wikipedia.org/wiki/Euclidean_plane_isometry

   Rotating the sheet by ten degrees around some marked point (which remains motionless). Turning the sheet over to look at it from behind. Notice that if a picture is drawn on one side of the sheet, then after turning the sheet over, we see the mirror image of the picture. These are examples of translations, rotations, and reflections respectively.

7. Dihedral group - Wikipedia

   en.wikipedia.org/wiki/Dihedral_group

   The product of two rotations or two reflections is a rotation; the product of a rotation and a reflection is a reflection. So far, we have considered D n to be a subgroup of O(2) , i.e. the group of rotations (about the origin) and reflections (across axes through the origin) of the plane.

8. Point group - Wikipedia

   en.wikipedia.org/wiki/Point_group

   Related pure rotational groups exist for each with half the order, and can be represented by the bracket Coxeter notation with a '+' exponent, for example [3,3,3] + has three 3-fold gyration points and symmetry order 60. Front-back symmetric groups like [3,3,3] and [3,4,3] can be doubled, shown as double brackets in Coxeter's notation, for ...

9. Rotation (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Rotation_(mathematics)

   The rotation group is a Lie group of rotations about a fixed point. This (common) fixed point or center is called the center of rotation and is usually identified with the origin. The rotation group is a point stabilizer in a broader group of (orientation-preserving) motions. For a particular rotation: The axis of rotation is a line of its ...