Based on the clue 'a planes wings are necessary to create this primar...', what is the answer?

Based on the clue 'a plane figure of seven sides seven angles', what is the answer? Based on the clue 'a plane flying at supersonic speed catches up to i...', what is the answer? Based on the clue 'a plane turned away from landing at an airport ci...', what is the answer? Based on the clue 'a planeload of children is evacuated from britain ...', what is the answer? Based on the clue 'a planet goes boom from the genesis device as the ...', what is the answer? Based on the clue 'a planet of our solar system', what is the answer? What is associated with: a planetarium in this capital bears the name of christa mcauliffe who died in the 1986 challen… Based on the clue 'a planetary satellite half a shilling', what is the answer?