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.
1 Cook for 1 min, then gradually stir in the milk to make a thick white sauce. 2  Remove from the heat and stir in all but a handful of cheese. 3  Drain the pasta, mix with the white sauce, tuna, sweetcorn and parsley, then season.4  Transfer to a baking dish and top with the rest of the grated cheese.ethod. 1  Heat oven to 180C/fan 160C/gas 4. Boil the pasta for 2 mins less time than stated on the pack. 2  To make the sauce, melt the butter in a saucepan and stir in the flour. 3  Cook for 1 min, then gradually stir in the milk to make a thick white sauce.