Indirect questions are questions asked in a polite way by using statements rather than direct questions. They typically include a polite request followed by an interrogative word like who, what, when, or if/whether, followed by a positive or negative statement. Using indirect questions is more polite than direct questions when speaking to strangers as it allows them to choose whether to answer without feeling directly pressured. Some common ways to start an indirect question include "Do you know...", "Could you tell me...", or "May I ask you...". The word order is the same as a statement rather than a question.