Since a square is a parallelogram, a rectangle, and a rhombus, our symmetry observations for a square will be the same as those we have already seen. A trapezoid has no reflectional symmetry and no rotational symmetry. We cannot make observations.
1 Return beef and accumulated juices to pan. Stir-fry for a few minutes. Add water, tomato sauce, liver spread and bay leaf; stir to combine. Bring to a boil then simmer, about an hour or until meat tender.  Add potatoes, carrots and green olives; simmer for another 6 to 8 minutes.
Heat vegetable oil in a skillet over high heat. Cook beef until browned, about 2 minutes per side. Remove beef to a warm plate. Reduce heat to medium; cook and stir mushrooms, 1 tablespoon unsalted butter, olive oil, and a pinch of salt in the skillet until mushrooms are very well browned, about 10 minutes. Mix in tomato sauce; cook and stir until tomato sauce thickens, about 5 minutes. Pour in Marsala wine and increase heat to high.