6.4 Converses of Section 6.3's Thms Flashcards
0
Q
thm about opposite angles
A
if BOTH pairs of opposite angles of a quadrilateral are CONGRUENT, then the quadrilateral is a parallelogram
1
Q
thm about opposite sides
A
if BOTH pairs of opposite sides or a quadrilateral are CONGRUENT, then the quadrilateral is a parallelogram
2
Q
thm about consecutive angles
A
if AN ANGLE of a quadrilateral is SUPPLEMENTARY to BOTH consecutive angles, then the quadrilateral is a parallelogram
3
Q
thm about diagonals
A
if the DIAGONALS of a quadrilateral BISECT each other, then the quadrilateral is a parallelogram
4
Q
NEW thm about one pair of sides
A
if ONE pair of opposite sides of a quadrilateral is congruent AND parallel, then the quadrilateral is a parallelogram
