D Given a parallelogram with its sides drawn along isometric grid lines, a spanning triangle is a triangle ABC with the following properties:
• A, B, C are grid points on the sides of the parallelogram
• A is a vertex of the parallelogram
• no side of triangle ABC is parallel to a side of the parallelogram.
For the parallelogram shown below, find two non-congruent spanning
triangles, each of which has one-third the area of the parallelogram.