Certificate Programs
Courses
Building Blocks
Types
Functions
Properties
Conditional Properties
Proofs
Why Logicwalk?
Log In
Get Started
if
A
B
||
C
D
and
D
B
||
C
A
, then
A
B
D
C
is a parallelogram
View as a table
|
Try proving it
Start from the conclusion and work back up the proof. Click the arrow to show the parents.