CBSE NCERT Solutions Chapter 6 Triangles Exercise 6.3 Question 1
1. State which pairs of triangles 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:
Solution (i)
Therefore by AAA similarity criterion,
~
Solution (ii)
Therefore, by SSS similarity criterion,
~
Solution (iii)
These triangles are not similar because their corresponding sides are not proportional.
Solution (iv)
These triangles are not similar because two given sides of triangles are not proportional.
Solution (v)
These triangles are not similar because in
,
is not contained within sides AB and BC whereas,
F is contained within sides DF and FE.
Solution (vi)
= 180 – 70 – 80 = 30 degrees
= 180 – 80 – 30 = 70 degrees
Corresponding angles of both the given triangles are equal.
Therefore, by AAA similarity criterion,
~
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