Question

Which statement can be combined with its converse to form a true biconditional?

Answer 1

This one is hard for me.

I choose : A

I hope that's help:)

Answer 2

A biconditional statement is deemed true when after the places of the clauses are exchanged, the statement is still correct. Not all acute angles are 30 degrees. The one that is applicably true when clauses are conversed is D. hence, it is true that when the sides are opposite rays, the angle formed is a straight angle