Ex 6.2, 5
In figure, DE || OQ and DF || OR. Show that EF || QR.
Given: DE II OQ and
DF II OR
To prove: EF II QR
Proof:
From (1) and (2)
ππΉ/πΉπ =ππΈ/πΈπ
In Ξ PQR,
ππΉ/πΉπ =ππΈ/πΈπ i.e.
Line EF divides the triangle PQR in the same ratio
β΄ EF II QR
Hence proved

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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