none. Wow I can't believe you asked that. >:D
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0 lines of symmetry
None
Depending on the triangle:A scalene triangle has no lines of symmetry.An isosceles triangle has 1 (one) line of symmetry.An equilateral triangle has 3 (three) lines of symmetry.
0 zip zilch nada none
An equilateral triangle has three lines of symmetry.