No.
Not necessarily, except rotational symmetry of order 1.
yes * * * * * Usually, no. Only isosceles right angled triangles have a line of symmetry.
a right triangle
It can have, but only if the two smaller angles are 45 degrees, then there is symmetry about the centre-line.
A shape that has no lines of symmetry, two right angles, and one acute angle is a right-angled triangle that is not isosceles. This triangle can have its right angles positioned in such a way that the overall shape lacks any symmetry. The acute angle ensures that the triangle does not conform to typical symmetrical properties. Thus, the right-angled triangle fits the criteria specified in your question.
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.
yes * * * * * Usually, no. Only isosceles right angled triangles have a line of symmetry.
a right triangle
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.