triangle
The letter T for example
yes
A parallelogram normally has no lines of symmetry unless it is in the shape of a rectangle which will then give it 2 lines of symmetry
There are many. An isosceles triangle, for example.
It will, unless the shape is symmetrical and the axis of reflection is parallel to the axis of symmetry.
It depends on the shape!
triangle
The letter T for example
yes
A parallelogram normally has no lines of symmetry unless it is in the shape of a rectangle which will then give it 2 lines of symmetry
Because linear symmetry defines a line such that the shape is unchanged when REFLECTED in that line.
There are many. An isosceles triangle, for example.
is a square a rational symmetry? is a square a rational symmetry?
No. You can reflect any shape about a line but if the resulting image is not the same as the original, that line is not a line of symmetry.
Not always. It depends where the line of symmetry is located.
Reflection symmetry, reflectional symmetry, line symmetry, mirror symmetry, mirror-image symmetry, or bilateral symmetry is symmetry with respect to reflection