1. They are alike in that they all have lateral sides that are rectangles. For any given figure, the front and back faces are congruent or the same. These front and back faces are also parallel. All of the figures are prisms. The specific type of prism depends on how many sides the base face has. For example, the first figure has 6 sides in the base face, so this is an hexagonal prism. The next figure is a square prism (aka a cube). The next figure is a triangular prism. The next an octagonal prism. Finally the last figure is a rectangular prism. You will use the same basic surface area and volume formula for each figure.
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2. If we don't compare the square and rectangle base faces, then we see that each base has a different number of sides. This leads to a different number of lateral lines. The first figure's base face has 6 sides, the next has 4 sides, then 3, then 8, then 4 again. The figures have slightly different names (mentioned above), though you could argue this is more a similarity rather than a difference.