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០៩២ ៧៧៤៤៤០ ឆន ំសិក ២០១៦-២០១៧<br />
៤៩. ក). បង្ហ ញថ EF BC<br />
េយ E ែចកកន ុង AB មផលេធៀប 2:1<br />
េគបន<br />
1 2<br />
FE FA<br />
FB<br />
3 3<br />
<br />
ែត FBFAAB<br />
<br />
3 3<br />
េនះ FE 1 FA 2<br />
FA<br />
AB<br />
នំឱយ<br />
2 <br />
FE FA<br />
AB<br />
3<br />
1<br />
2<br />
DA AB<br />
2 3<br />
នំឱយ<br />
2 1<br />
FE AB<br />
AD<br />
3 2<br />
េយើងបន<br />
2 1<br />
FE BC <br />
<br />
AB ADBC<br />
3 2 <br />
<br />
ែត BC AD ( ្រជុងឈម្របេលឡូ្រកម )<br />
2 1 2 1<br />
នំឱយ FE BC <br />
<br />
AB ADAD AB AD AD<br />
3 2 3 2<br />
2<br />
េរៀបេរៀងេយ៖ ЯĊŲ Ю₤₣lН₣ Page 89