Poach eggs in a wide, shallow pan filled with simmering water. Using the handle of a slotted spoon, swirl the simmering water to create a whirlpool or vortex (this will help the eggs to hold their shape). Crack the eggs, one or two at a time, directly into the centre of the whirlpool.
Confidence votes 35. The Definition of Congruent Figures (which is a proof) says that if two figures have corresponding sides congruent and corresponding angles congruent, then the figures are to be congruent. Minor edit?
Congruent means equal. Congruent line segments are usually indicated by drawing the same amount of little tic lines in the middle of the segments, perpendicular to the segments. Congruent segments do not need to be parallel to each other; they do not need to be perpendicular, either.