Question

MEDAL for help: is it D because B and C sound true but they cant both be true

Answer 1

hint:
two triangles are similar, when they have their angles congruent each other neatly.
Furthermore a rectangle and a trapezoid have not the same shape

Answer 2

i know not A

Answer 3

im thinking B

Answer 4

that's right!

Answer 5

yay!

Answer 6

:)

Answer 7

Correct! Think of two isosoles triangles. One tall and skinny the other short and wide. Clearly their base angles are not congruent so they can't be similar.

When faced with a problem like this, try to come up with a "counterexample" (something that shows a statement could be false).