The lengths of the sides of a triangle are d+1, 2d and 3d. The sum of the degree measures of the three interior angles of the triangle is ---<br>

1. The lengths of the sides of a triangle are d+1, 2d and 3d. The sum of the degree measures of the three interior angles of the triangle is ---

[EXIM Bank Officer(Cash)-2011 : 2011]

1. 6d+1

2. 60d

3. 90

4. 180

5. None of these

Answer

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