div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: mdpcosfileswordpresscomIven parabolas are symmetric about the line y — -r or x so they have a common normal with it meets the parabolas at slope I -1 13 hence the req circles src=https:reader033fdocumentsusreader033viewer20220424025f1324310044fe4d8d30dcc2html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: mdpcosfileswordpresscomIven parabolas are symmetric about the line y — -r or x so they have a common normal with it meets the parabolas at slope I -1 13 hence the req circles src=https:reader033fdocumentsusreader033viewer20220424025f1324310044fe4d8d30dcc2html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: mdpcosfileswordpresscomIven parabolas are symmetric about the line y — -r or x so they have a common normal with it meets the parabolas at slope I -1 13 hence the req circles src=https:reader033fdocumentsusreader033viewer20220424025f1324310044fe4d8d30dcc2html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: mdpcosfileswordpresscomIven parabolas are symmetric about the line y — -r or x so they have a common normal with it meets the parabolas at slope I -1 13 hence the req circles src=https:reader033fdocumentsusreader033viewer20220424025f1324310044fe4d8d30dcc2html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: mdpcosfileswordpresscomIven parabolas are symmetric about the line y — -r or x so they have a common normal with it meets the parabolas at slope I -1 13 hence the req circles...