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-each reflection can be described about the axis it is reflected | -each reflection can be described about the axis it is reflected | ||
| − | -when | + | -when two reflections are done in a row, an angle between the axis of each reflection can be found |
-this permutation can now be described by an angle | -this permutation can now be described by an angle | ||
Revision as of 19:09, 10 September 2008
A helpful tip to thinking about this question
-we can describe all rotations by an angle
-we can not describe reflections by an angle
-each reflection can be described about the axis it is reflected
-when two reflections are done in a row, an angle between the axis of each reflection can be found
-this permutation can now be described by an angle
-thus it must also be a rotation
-zach
