Question

Suppose you construct lines a, b, c, and d so that a is perpendicular to both b and c and d is parallel to c. Which of the following is true?

A. d is perpendicular to b.
B. b is parallel to c.
C. c is perpendicular to b.
D. None of the above.

Answer 1

Try drawing them

Answer 2

Always a good tip to draw the situation when you work with geometrical objects. Often you can see things clearly right away.

Answer 3

What I came up with is that line a is perpendicular to the rest of the line b, c and d. so it would be D, I assume.

Answer 4

Sounds good :)