📒 Excerpt from Lehrbuch der StereometrieDie Ebene schneidet AB in ihrer Mitte 0, da OA ob; jede in der Ebene durch 0 gezogene Gerade ist senkrecht auf der Mitte von ab. Die Ebene wird also erzeugt werden durch den einen Schenkel eines rechten Winkels, der sich um den anderen Schenkel OA dreht.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.