Step-by-step Answer
PAGE: 726SET: ExercisesPROBLEM: 20
Please look in your text book for this problem Statement

The given exterior angles are ;

In a convex polygon sum of measures of exterior angles is

                        (Add: )

    (Subtract from each side)

                   (Apply additive inverse property: )

                          (Apply additive identity proerty: )

                                        (Subtract: )

The unknown angle measure is .


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