ProveIt! Two-Column Proofs Practice Tool

Proof: Parallelogram 5

pgram

GHJK

GHJ = 60 $\^o$

line JKL

LKG = 120 $\^o$

1.

1.

JKG = 60 $\^o$

line JKL

GHJ = 60 $\^o$

120 $\^o$ =

LKG

180 $\^o$ =

LKG + 60 $\^o$

GHJ =

JKG

JKL =

LKG +

JKG

pgram

GHJK

JKL = 180 $\^o$

ProveIt! by Michael Ferraro <mferraro@balstaff.org>.
Copyright ©2010. All rights reserved.