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Question 30

Which of the following triplets cannot be the angles of a triangle?
a) 67,51,62
b) 70,83,27
c) 90,70,20
d) 40,132,18


Solution

We know that, the sum of the interior angles of a triangle is 180
Now, we will verify the given triplets:
a) 67+51+62=180
b) 70+83+27=180
c) 90+70+20=180
d) 40+132+18=190
Clearly, triplets in option (d) cannot be the angles of a triangle,because sum of interior angles of a triangle is equal to 180°


Mathematics
NCERT Exemplar
Standard VII

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