Question

Which transformation will always map a parallelogram onto itself?

Answer 1

A.
a 90° rotation about its center

B.
a reflection across one of its diagonals

C.
a 180° rotation about its center

D.
a reflection across a line joining the midpoints of opposite sides

Answer 2

will draw out the transformations and let you decide

Answer 3

reflection across a line joining the midpoints

now out of those 4 choices, which one maps the parallelogram onto itself?

Answer 4

Nice job @Mercury