the digrotimonic line of the triad is stable and thus can be subverted into forming a diagonal line under pythagoras' theorem, however this only occurs in abliminal form and so must be considered when using isocetrique theorem
It has a line of rotational symmetry - along the diagonal.
Axis of symmetry.
effectively yes. Diagonal symmetry is when the line of symmetry goes diagonally, rather than horizontally or vertically
yes
An equilateral triangle has both line symmetry and rotational symmetry. A non-equilateral isosceles triangle has line symmetry but not rotational symmetry. A scalene triangle has neither kind of symmetry.
No.
yes
Yes * * * * * Not generally.
1 its from the "right angle point" on a diagonal to the center of the longest line.None normally but if it's an isosceles right angle triangle it will have 1 line of symmetry.
An equilateral triangle and an isoceles triangle have one line of symmetry.
no.
If you draw a diagonal line from corner to corner of a parallelogram, that is a line of symmetry.