Question

Is the following definition of supplementary reversible? If yes, write it as a true biconditional.
Linear pairs of angles are supplementary.

A. The statement is not reversible.

B.Yes, if angles form a linear pair, then they are supplementary.

C.Yes, angles form a linear pair if (and only if) they are supplementary. *I choose this one*

D.Yes, angles are supplementary if they form a linear pair.

2. Which biconditional is NOT a good definition

A. Two angles are supplementary if and only if the sum of their angles measures 180.

B.Two angles are vertical angles only if they are not adjacent to each other and are formed by two intersecting lines.

C.Two angles form linear pair if and only if the angles are adjacent. **

D.The sum of two angles is 90 if and only id those angles are complementary

Answer 1

well first off number 1 is c all linear pair are supplementary