In each of the following fill in the word needed to make the
     In each of the following, fill in the word needed to make the resulting sentence true.  A quadrilateral is a__if, and only if, its diagonals are congruent and perpendicular and they bisect each other.  A quadrilateral is a__if, and only if, its diagonals are perpendicular and bisect each other.  Fill in the word needed to make the resulting sentence true If none of the words makes the sentence true, choose none.  a. A quadrilateral is a  If, and only if, its diagonals are congruent and perpendicular and they bisect each other.  A quadrilateral is a if, and only if, its diagonals are perpendicular and bisect each other. 
  
  Solution
a. paralleogram
b.rhombus

