"A Latin cross or crux immissa is a type of cross in which the vertical beam sticks above the crossbeam, with the three upper arms either ...
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equally long or with the vertical topmost arm shorter than the two horizontal arms, and always with a much longer bottom arm.
If displayed upside down it is called St. Peter´s Cross, because he was reputedly executed on this type of cross. When displayed sideways it is called St. Philip´s cross for the same reason." - (en.wikipedia.org 26.02.2022)
