Ex 6.2, 1
In figure(i) ,DE || BC. Find EC in (i)
It is given that
DE II BC
Hence ,
/ = /
Putting the values
1.5/3 = 1/
1.5 EC = 1 3
EC = (1 3)/1.5
EC = 2 cm
Ex 6.2, 1
In figure (ii), DE || BC. Find AD.
It is given that DE II BC
Hence ,
𝐴𝐷/𝐷𝐵 = 𝐴𝐸/𝐸𝐶
Putting the values
𝐴𝐷/7.2 = 1.8/5.4
AD × 5.4 = 1.8 ×7.2
AD = (1.8 × 7.2)/5.4
AD = (18 × 72 × 10)/(54 × 100)
AD = 72/30
AD = 2.4 cm

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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