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____
- A. 6d+1
- B. 60d
- C. 90
- D. 180
- D. None of these
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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____
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