The cross-section is a rectangle. Its height is the same as the height of the prism, while its length is not necessarily the same but certainly perpendicular to the height.
Answer:A
Step-by-step explanation: A is 8d+d, and since d=1, 8d,+1d is equal to 9d
<u><em>PLEASE PROVIDE AN EXAMPLE!</em></u>
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Without an example, the only thing I can tell you is a Polygon is a plane figure with three straight sides (or more) and angles. (usually 5 or more.)
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<em>Sorry, This was all I could provide with the amount of information given, please try to provide more information! If you have extra information, please let me know and I'll be sure to help!</em>
