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Prüfung Planimetrie begonnen
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2 年之前 | |
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| kegelnetz.svg | 2 年之前 | |
| martiniglas.svg | 2 年之前 | |
| sektglas.svg | 2 年之前 | |
| toblerone.svg | 2 年之前 | |
| winkel_im_quader.svg | 2 年之前 | |
