Last updated at May 29, 2018 by Teachoo

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Ex 6.3,1 (i) State which pairs of triangles in figure are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form In and = P = Q = R Ex 6.3, 1 (ii) State which pairs of triangles in figure are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form Finding ratio of sides / =2/4 = 1/2 / =3/6 = 1/2 / =2.5/5 = 1/2 Hence, / = / = / =1/2 Therefore , using SSS similarly criterion So, Ex 6.3, 1(iii) State which pairs of triangles in figure are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form Finding ratio of sides / =2/4 = 1/2 / =3/6 = 1/2 / =2.7/5 Here, the ratio of corresponding sides of both the triangles is not same , LMP and are not similar . Ex 6.3, 1 (iv) State which pairs of triangles in figure are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form In and = =70 Also, / =2.5/5 = 25/(5 10)=1/2 / =5/10=1/2 So, / = / =1/2 Hence, by SAS similarity criterion for two triangles Ex 6.3, 1(v) State which pairs of triangles in figure are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form In and A = F = 80 / =2.5/5 = 25/(5 10) =1/2 / = /6 AC is not given So, / / So , and are not similar . Ex 6.3, 1 (vi) State which pairs of triangles in figure are similar. Write the similarity criterion used by you for answering the question and also write the pairs of similar triangles in the symbolic form In + + = 180 70 " "+80 " "+ " = " 180 150 + = 180 = 180 - 150 = 30 In and = = Therefore by AA similarity criterion for two triangles " "

Chapter 6 Class 10 Triangles

Serial order wise

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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.