# Biconditional statements

posted by
**oconel**
.

™PQR and ™QRS are supplementary if

and only if m™PQR = m™QRS = 90°. true or false if false provide a couterexample

posted by
**oconel**
.

™PQR and ™QRS are supplementary if

and only if m™PQR = m™QRS = 90°. true or false if false provide a couterexample