Jonathan Kirk

Per. 1

11/16/03

Math notes sec 6.2

Theorem 6.2

If a quadrilateral is a Parallelogram, then its opposite sides are congruent.

Q______________R

/ / __ ~ __ __ ~ __

/ / PQ = RS and SP = QR

P/_____________/S

Theorem 6.3

If a quadrilateral is a parallelogram, then its opposite angels are congruent.

Q____________R

/ / ~ ~

/ / P = R and Q = S

P/___________ / S

Theorem 6.4

If a quadrilateral is a parallelogram, then its consecutive angels are supplementary.

Q____________R o o

/ / m P+ m Q = 180, m Q + m R = 180

/ / o o

P/___________ / S m R+ m S = 180, m S + m P = 180

Theorem 6.5

If a quadrilateral is a parallelogram, then its diagonals bisect each other.

Q____________R

/ / ___ ~ ___ ___ ~ ___

/ / QM = SM and RM = PM

P/___________ / S