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18 January, 20:26

If a, b, c, and d are coplanar lines and a is parallel to b, b is perpendicular to c, and c is parallel to d, then which statement must be true?

d is perpendicular to c.

d is perpendicular to a.

d is parallel to b.

c is parallel to a.

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Answers (2)
  1. 18 January, 22:43
    0
    D must be perpendicular to a because d is parallel to c. c is perpendicular to b. b is parallel to a.
  2. 19 January, 00:18
    0
    D is perpendicular to a.
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