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 Apr 23 awarded Famous Question Mar 1 awarded Yearling Nov 17 awarded Popular Question Oct 9 awarded Notable Question Sep 27 awarded Popular Question May 4 awarded Popular Question Mar 8 awarded Popular Question Mar 1 awarded Yearling Feb 12 awarded Popular Question Jan 27 awarded Tumbleweed Jan 19 accepted is it possible to project any triangle on a plane as a right triangle on another plane? Jan 19 comment is it possible to project any triangle on a plane as a right triangle on another plane? so $m_1$, $m_2$ are projecting "onto" $k_1$ and $k_2$? and then you push it towards the picture plane along $P_1$ and $P_2$s' intersection to create a right triangle on the picture plane? So $k_1$ and $k_2$ are like the shadow of $m_1$ and $m_2$? Jan 19 comment is it possible to project any triangle on a plane as a right triangle on another plane? suppose the object plane is the xy-plane and picture plane is the xz-plane, since $k_1$, $k_2$ touches A wouldn't the intersection of $P_1$ and $P_2$ be on the xy-plane? That would imply that the viewing point is on the xy-plane as well... Am I missing something here? Jan 19 revised is it possible to project any triangle on a plane as a right triangle on another plane? added 1 character in body Jan 19 revised is it possible to project any triangle on a plane as a right triangle on another plane? deleted 1 character in body Jan 19 revised is it possible to project any triangle on a plane as a right triangle on another plane? deleted 1 character in body Jan 19 asked is it possible to project any triangle on a plane as a right triangle on another plane? Nov 27 awarded Notable Question Oct 15 awarded Popular Question Sep 24 awarded Autobiographer