http://dark.z5lcip4dafatwwa6hvyibizpzwycvwp67cjga3hzjhxhwvuyaqavxnid.onion/math/526
problem found in https://www.mathematrucker.com/problems_1975-1979.pdf originally published in the Pi Mu Epsilon Journal diagram is my own, any mistakes in it are my fault P969 Thu 2022-05-19 08:16:23 link reply I tried doing this: 0.5(A+C-B-C) x (A-B) = 0 P4990 Sun 2022-07-31 17:18:10 link reply >not calling the rectangle SPQR By proportionality, we have AB=2RS, as well as PS=QR=CH/2, H being the projection of C on AB.