Proving the Parallelogram Diagonal Theorem
Angles Segments Triangles Statements Reasons
Given: ABCD is a parallelogram.
Diagonals AC, BD intersect at E.
Prove: AE CE and BE DE
ZABE
ZADE
ZBAE
ZBCE
Z CBE
B
С
CDE
ZDAE
ZDCE
Statements
Reasons
E
A
D
Assemble the proof by dragging tiles to
the Statements and Reasons columns.

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