You can flip the traced version along various lines. If the flipped shape matches the original then the that is a line of symmetry.
Alternatively, if you can find a fold such that the two halves of the tracing match then the fold line is a line of symmetry.
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Trace the figure. Then turn the tracing paper over so that the pencil marks are on the opposite side of the paper. If you can find a position in which the original figure and the inverted trace match up, you have a line of symmetry.
There are an infinite number of lines of symmetry in a circle, as any diameter will be a line of symmetry and there are an infinite number of angle measure for that line to pass through.
The relationship is one of identity. The number of lines of symmetry for any object, are always identically equal to the number of lines of symmetry for that same object.The relationship is one of identity. The number of lines of symmetry for any object, are always identically equal to the number of lines of symmetry for that same object.The relationship is one of identity. The number of lines of symmetry for any object, are always identically equal to the number of lines of symmetry for that same object.The relationship is one of identity. The number of lines of symmetry for any object, are always identically equal to the number of lines of symmetry for that same object.
An equilateral triangle has 3 lines of symmetry which perpendicularly bisects each of its vertices
As many as you find :P