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find the missing angles a 65 a= missing angle find the missing angles 65 a a= missing angle find the missing angles x x x x= missing angle find the missing angles a a a= missing angle find the missing angles a 70 70 a a= missing angle find the missing angles 15 a a= missing angle find the missing angles a a a a a= missing angle find the missing angles 58 a 100 80 a= missing angle find the missing angles a 43 a= missing angle find the missing angles 52 a 47 a= missing angle |