No.
Not necessarily, except rotational symmetry of order 1.
a right triangle
yes * * * * * Usually, no. Only isosceles right angled triangles have a line of symmetry.
It can have, but only if the two smaller angles are 45 degrees, then there is symmetry about the centre-line.
Right-angled triangles can be symmetrical, but only under specific conditions. An isosceles right-angled triangle, where the two legs are of equal length, exhibits symmetry along the line that bisects the right angle. However, a scalene right-angled triangle, with all sides of different lengths, lacks any line of symmetry. Therefore, while some right-angled triangles are symmetrical, many are not.
None.
None.
I think none. In fact the only triangle that I believe has any rotational symmetry is an equilateral triangle.
3
Not necessarily, except rotational symmetry of order 1.
a right triangle
yes * * * * * Usually, no. Only isosceles right angled triangles have a line of symmetry.
A scalene triangle that is not right angled.
None normally but if it is a right angle isosceles triangle it will have 1 line of symmetry
it has only one line of symmetry.
This could be either an isosceles triangle or a right angled triangle.
Well, honey, a right triangle does not have rotational symmetry because if you try to rotate it by any angle other than 90 degrees, it won't look the same. So, unless you're planning on spinning that triangle like a disco ball at a 70s party, you won't find any rotational symmetry there.