If the radius of a circle is 15 ft, what is its diameter?

What additional information could be used to prove that δxyz ≅ δfeg using asa or aas? check all that apply. ∠z ≅ ∠g and xz ≅ fg ∠z ≅ ∠g and ∠y ≅ ∠e xz ≅ fg and zy ≅ ge xy ≅ ef and zy ≅ fg ∠z ≅ ∠g and xy ≅ fe

Which expression is equivalent to? assume x > 0 and y > 0.

Pls! does anybody know a shortcut for answering these types of questions in the future?