### 26.8.4 Parallelograms in the plane

See Section 27.7.4 for parallelograms in space.

The parallelogram command creates parallelograms.

- parallelogram takes three mandatory arguments and one optional argument:
  - A,B,C, three points.
  - Optionally, var, a variable name.
- parallelogram(A,B,C⟨,var⟩) returns and draws the parallelogram ABCD for the appropriate D.

  If the argument var is given, then D will be assigned to it.

#### Examples

parallelogram(0,1,i,D)

affix(D)

−1+i |  |  |  |  |  |  |  |  |  |