Answer:
A trapezoid has no axes of reflectional symmetry. A trapezoid has no rotational symmetry (Order 1). Note: Having no rotational symmetry means that the figure must be rotated a full 360º to again appear in it original position.
Step-by-step explanation:
Step-by-step explanation:

therefore, 9 students haven't given their speech
That's going to depend a lot on the given triangles. Sadly, our knowledge in that area is quite shallow.