| 1. | This time one takes planes parallel to the tangent plane.
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| 2. | In such a hexlet there is only one tangent plane to the hexlet.
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| 3. | Two different hyperbola will be formed on either side of the tangent plane.
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| 4. | These identifications are always given by affine transformations from one tangent plane to another.
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| 5. | For these points there exist no tangent planes.
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| 6. | What does it mean by a tangent plane?
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| 7. | On the tangent plane to the surface which is used to calculate distances and angles.
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| 8. | The tangent plane is an metric.
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| 9. | Its electron is located at some point on the black hole side of the tangent plane.
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| 10. | For example the tangent planes to a surface along a curve in the surface form such a family.
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