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Prüfung Planimetrie begonnen
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1 年之前 | |
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| RechteckUnterParabel_V1.png | 1 年之前 | |
| kegelnetz.png | 1 年之前 | |
| martiniglas.png | 1 年之前 | |
| toblerone.png | 1 年之前 | |
| winkel_im_quader.png | 1 年之前 | |
