Answer:
This is an incomplete sentence.
Explanation:
Complete sentence has both subject and predicate. Subject is the person who is performing the action and predicate usually contains the verb and the rest part of the sentence. It has complete meaning or makes sense. Incomplete sentence would have either of the two missing.
The given phrase "If I had intended to buy the car" is an incomplete sentence. There should be a second part or predicate of the sentence as well. For example: what would have happened or what would be done, "If I had intended to buy the car". It only mentions the subject part of the sentence.
Since Shakespeare's plays involve a bit of traditional language and sophistication, the players often speak in free verse. This usually happens when speaking aloud or expressing passions and emotions. Hope this helped :))
APA style you can never go wrong