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Need some help please

Need some help please-example-1

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The answer is 10 because five lines would be placed from edge to edge of the shape while another five lines will be place from the middle of a side to another.
User Ran Avnon
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if you draw out a decagon it has ten sides. You can draw 10 lines through it and those are the lines of symmetry.
Need some help please-example-1
User Alexey Shrub
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