None normally unless it's in the form of a rectangle which has 2 lines of symmetry.
1 lines
It has 2 symmetry lines
4
Depending on the triangle, there may be three, one, or none.
A parallelogram has two pairs of opposite congruent lines
They have NO lines of symmetry
A parallelogram need have no lines of symmetry.
A parallelogram has 2 pairs of parallel lines
A parallelogram has two lines of symmetry. These lines are the diagonals of the parallelogram, which bisect each other. Additionally, while a rectangle (a special type of parallelogram) has four lines of symmetry, a general parallelogram only maintains symmetry through its diagonal intersections.
6
2
None.