Assuming the question is about ROTATIONAL symmetry rather than rational symmetry, the answer is none.
A right angle has one line of symmetry.
None.
|__ that is a right angle, if it was connected at least. But it's close enough! NONE! * * * * * It has one, which is the angle bisector.
It has 2
Most shapes have no line of symmetry and no right angle. Look at your hand, feet, face or body (the last two are only nearly symmetrical), the keyboard, the monitor.
None.
A right angle has one line of symmetry.
It depends. If it is a right isosceles triangle, it has one axis of symmetry (the line which would bisect the right angle). A right scalene triangle has no axis of symmetry.
None.
None normally but if it is a right angle isosceles triangle it will have 1 line of symmetry
is a right angle that intersects and 3 lines of symmetry
A right scalene triangle
|__ that is a right angle, if it was connected at least. But it's close enough! NONE! * * * * * It has one, which is the angle bisector.
Pentagon
It has 2
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.
None.