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Mathematics 10 Online
OpenStudy (anonymous):

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.

OpenStudy (mathstudent55):

Does this figure help? |dw:1366044440409:dw|

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