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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.

Verified Answer :

scme1702

d must be perpendicular to a because d is parallel to c. c is perpendicular to b. b is parallel to a.

Answer: The second option is correct i.e. d is perpendicular to a

Step-by-step explanation: Given : a || b

b ⊥ c

c || d

Since b ⊥c  and c || d therefore

∴b will be  ⊥ d

and a || b

⇒ a ⊥ d

or d is perpendicular to a

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