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Symmetry relatively straight

Lecture







  Symmetry relatively straight

There is a straight line l and a point A not lying on a straight line. Drop from point A to line l perpendicular. On the continuation of this perpendicular, we postpone the segment OA` = OA. Point A` is symmetric to point A with respect to line l.

  Symmetry relatively straight

The transformation of symmetry with respect to the straight line l, is the transformation of the figure F into the figure F`, in which each of its points A goes to a point A` that is symmetrical with respect to the straight line l. Such figures F and F` are called symmetric with respect to the straight line l. If a transformation of a figure with respect to a straight line l translates it into itself, then this figure is called symmetric with respect to a given straight l, and the straight line l is called the axis of symmetry of the figure.

  Symmetry relatively straight

So the rhombus is symmetrical to itself with respect to its diagonals. Diagonal diamonds are its axes of symmetry.

See also

created: 2014-10-05
updated: 2021-03-13
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Planometry

Terms: Planometry