Question

Roberto folds a circular piece of paper as shown. When he unfolds the paper, how many different-sized central angles (less than 360º) are formed? (Enter only the number.)

Answer 1

Each time Roberto folds, the number of central angles is multiplied by 2. On the first flood Roberto does, there is 2. On the second fold, 2 x 2 = 4 and on the third fold 4 x 2 = 8.

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