there is none
No.No.No.No.
2
A triangle
4 lines of symmety
Not sure what an isosely triangle might be! An isosceles triangle has one line of symmetry.
Four. Two from corner to corner and two down the middle point of the vertical and horizontal sides
Some of the letters don't have a line of symmety because some are not equally the same size.
The line of symmetry located on a parabola is right down the center. A parabola is a U shape. Depending on the direction of the parabola it either has a x axis of symmetry or y axis of symmetry. You should have two equal sides of the parabola.