3
First of all, your grammar is terrible. The question should be "Does a triangle have 2 lines of symmetry and 2 lines of rotational symmetry? and the answer is no. A triangle can not have 2 lines of rotational symmetry, because you only rotate the image, you do not use any lines.
Rotational symmetry is based on points of rotation not lines
Triangle * * * * * The only triangle with rotational symmetry of order 3 is an equilateral triangle and that has 3 lines of symmetry, not 0. The triskelion (the three legs) on the Isle of Man flag has rotational symmetry of order 3 but no lines of symmetry.
No.
Not necessarily, except rotational symmetry of order 1.
how many lines of symmetry has an equilateral triangle
it has only one line of symmetry.
A scalene triangle that is not right angled.
None.
A triangle........I think
None normally but if it is a right angle isosceles triangle it will have 1 line of symmetry
3 lines * * * * * None if it is acute angled scalene One if it is acute angled isosceles and Three if it is equilateral.