| 11. | As shown to the left, in the conrotatory transition state there is a ? mirror plane of symmetry.
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| 12. | The energy of sunlight which enters the mirror parallel to its plane of symmetry is focused along the solar cookers.
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| 13. | The ibex was paraxonic, with the plane of symmetry of each foot passing between the third and fourth digits.
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| 14. | Its blades feature a symmetrical airfoil with its plane of symmetry in the plane of rotation and perpendicular to the air stream.
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| 15. | There are two main categories of spinnakers, symmetric and asymmetric depending on whether a plane of symmetry exists for that particular sail.
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| 16. | An inverted mark along the horizontal or sagittal plane of symmetry indicates a socially inferior rank to that indicated by the primary mark.
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| 17. | This transverse plane has infinite planes of symmetry and thus, within this plane, the material properties are the same in all directions.
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| 18. | The hexagonal bipyramid has a plane of symmetry ( which is rhombic and lie at 30?angles to each other, perpendicular to the horizontal plane.
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| 19. | The meso compound is bisected by an internal plane of symmetry that is not present for the non-meso isomers ( indicated by an X ).
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| 20. | You can get an achiral object from the combination of chiral sub-parts, if you attach the two mirror images across the plane of symmetry.
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