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Topic | What's so special about the keystone? You know, of an arch? |
RetuenOfDevsman 02/23/24 1:11:24 AM #1: | Every preschooler book that mentions arches points out that the keystone is the most important part because it holds all the other stones in place. But I see no reason you would be able to remove any other stone without the whole thing collapsing either. ... Copied to Clipboard! |
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