The three lines joining each vertex to the midpoint of the opposite side.
They are also the medians, altitudes and perpendicular bisectors of the sides. In an equilateral triangle these are coincident.
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There are a total of 3 lines of symmetry in an equilateral triangle
An equilateral triangle has 3 lines of symmetry
An equilateral triangle has three lines of symmetry.
An equilateral triangle contains at least 2 lines of symmetry (it actually contains 3 lines of symmetry). An equilateral triangle is also radially symmetric.If the question is "Is there a triangle with exactly 2 lines lines of symmetry?", the answer is no.
An equilateral triangle has 3 lines of symmetry