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How many lines of symmetry does an equilateral triangle have?
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if you draw a line from one vertex of the triangle to the midpoint of the opposite side you have a line of symmetry |dw:1403617548036:dw|
how many of these lines can you draw?
1 right
no - there are 3 vertices on the triangle
oh
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|dw:1403617696949:dw|
they are the 3 lines of symmetry - each of them cut the triangle in half
ohhh
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