ProveIt! Two-Column Proofs Practice Tool

Proof: Parallelogram 8

G =

JHI

GHJ =

GKJ

line GHI

Quadrilateral GHJK is a pgram

pgram

1.

1.

Quadrilateral GHJK is a pgram

pgram

GHI = 180 $\^o$

line GK $\|\|$ line HJ

180 $\^o$ =

GKJ +

G

line GHI

GHI =

GHJ +

JHI

angle

GKJ and

angle

G are supplementary

G =

JHI

line GHI $\|\|$ line JKL

GHJ =

GKJ

ProveIt! by Michael Ferraro <mferraro@balstaff.org>.
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