does a trapezoid have four congruent angles?

Question

i am having trouble on geometric things in general.

Answer 1

No, but the angles between the short base and the left slope and the angle between the long base and the left slope are complementary (add up to 180 degrees), as do the two angles on the right slope. Only if the trapezoid becomes a parallelogram, a square or rectangle do we get a connection between opposite angles.