It all depends what types of shapes, but take for example a circle, it can have multiple lines of symmetry.
Yes, they do exist. In fact, there are infinitely many of them.
You would call the group of shapes which has at least one line of symmetry symmetrical shapes. Stars, circles, and rectangles are considered symmetrical shapes.
There could be many answers to this. If were thinking in terms of geometry: a triangle has between 1 and 3 lines of symmetry a square will always have 4 lines of symmetry. Irregular shapes might have a single line of symmetry. For instance, a building may have a single line of symmetry. a line between two points may only have one line of symmetry. because it is only 2 dimensions, it is impossible for it to have more than one line of symmetry.
Only One Line of SymmetryAn isosceles triangle only has one line of symmetry.
None. A line of symmetry, if it exists, is infinitely long and so a third of the line cannot exist as a separate entity.
A square dies because you can fold it across 😜.
An isosceles triangle and an isosceles trapezoid are two of them.
An isosceles triangle for example has only one line of symmetry
An isosceles triangle has only one line of symmetry
There are 11 letters with only one line of symmetry.
An object that has only one line of symmetry is said to have bilateral symmetry. This means that it can be divided into two equal halves along one axis.