Last updated at Dec. 8, 2016 by Teachoo

Transcript

Ex 6.2, 2 E and F are points on the sides PQ and PR respectively of a PQR. For each of the following cases, state whether EF || QR : (i) PE = 3.9 cm, EQ = 3 cm, PF = 3.6 cm and FR = 2.4 cm Note- If a line divides any two sides of the triangle in the same ratio, then the line is parallel to the third side. So, in order to prove EF II QR we have to prove that / = / Since L.H.S R.H.S Hence, EF and QR are not parallel Ex 6.2, 2 E and F are points on the sides PQ and PR respectively of a PQR. For each of the following cases, state whether EF || QR : (ii) PE = 4 cm, QE = 4.5 cm, PF = 8 cm and FR = 9 cm Note- If a line divides any two sides of the triangle in the same ratio, then the line is parallel to the third side. In-order to prove EF II QR we have to prove that / = / Since L.H.S = R.H.S Hence, EF QR Ex 6.2, 2 E and F are points on the sides PQ and PR respectively of a PQR. For each of the following cases, state whether EF || QR : (iii) PQ = 1.28 cm, PR = 2.56 cm, PE = 0.18 cm, PF = 0.36 cm Note- If a line divides any two sides of the triangle in the same ratio, then the line is parallel to the third side. Inorder to prove EF II QR , we have to prove that / = / Now, we find the ratios Since L.H.S = R.H.S Hence, EF QR

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.