Assertion: glider | /r/CapableOf | take positive incidence
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text: Ideally, these two planes would be parallel, having an incidence of 0-0; a negative incidence (when the wings are at a negative angle of attack) leads to the glider taking a nose dive and a positive incidence (when the wings are at a positive angle of attack) leads to the glider flying back to the earth in an inside loop.