human
Describe the properties of a rhombus \( A B C D \) is a rhombus.
Which lines must be perpendicular? ![Tilted rhombus with top left vertex labelled A, top right vertex labelled B, bottom left vertex labelled D and bottom right vertex labelled C.]() \( A B \) and \( B C \)
gpt
Believes adjacent sides of a rhombus are always perpendicular