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Ex 6.2, 1 - In figure (i) DE || BC. Find EC (ii) Find AD - Theorem 6.1

 

  1. Chapter 6 Class 10 Triangles
  2. Serial order wise
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Ex 6.2, 1 In figure(i) ,DE || BC. Find EC in (i) It is given that DE II BC Hence , 𝐴𝐷/𝐷𝐡 = 𝐴𝐸/𝐸𝐢 Putting the values 1.5/3 = 1/𝐸𝐢 1.5 Γ— EC = 1 Γ— 3 EC = (1 Γ— 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/𝐷𝐡 = 𝐴𝐸/𝐸𝐢 Putting the values 𝐴𝐷/7.2 = 1.8/5.4 AD Γ— 5.4 = 1.8 Γ—7.2 AD = (1.8 Γ—7.2)/5.4 AD = 7.2/0.3 AD = 72/3 AD = 24 cm

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