notes 6-2

6.2 Properties of Parallelograms
||ograms are quad with both pairs of opposite sides ||

Theorem 6.2: If a quad is a ||ogram, then its opposite sides are congruent
6.3: If a quad is a ||ogram then its opposite angles are cong
6.4: if a quad is a ||ogram, then its consecutive angles are supplementary
6.5: if a quad is a ||ogram, then its diagonals bisect each other