document.write( "Question 1145141: Hello. Can someone help me about how did Lambert tried to disprove the parallel postulate of Euclid? And explain how did he came up with the Lamberts Quadrilateral? Thank you
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Algebra.Com's Answer #766346 by ikleyn(52949) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "(a) How did Lambert tried to disprove the parallel postulate of Euclid\r
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document.write( "    Read this article from the Internet\r\n" );
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document.write( "        https://www.math.upenn.edu/~kazdan/proof/notes/parallel-postulateGrabiner2009.pdf\r\n" );
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document.write( "    There is nothing more enjoyable than to read from good sources (!)\r\n" );
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