In general, none.
An equilateral triangle
There is three lines of symetry
usually none
a equilatral triangle has at least up to 4 lines of symetry
the no. of times the figure fits into itself is called order of rotation.
An equilateral triangle
One type of symetry is rotation symetry.
What type of triangle?
A triangle. -wrong #no it is not a triangle it would be correct if they were asking for sides this is rotational symetry
An equilateral triangle
1
A scalene triangle has no lines of symmetry
1
1
1
triangle
3