Question

how many more sides does a dodecagon have than a nonagon?
□ sides
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Explanation:

Step1: Recall sides of dodecagon

A dodecagon has 12 sides.

Step2: Recall sides of nonagon

A nonagon has 9 sides.

Step3: Calculate the difference

Subtract the number of sides of nonagon from dodecagon: $12 - 9 = 3$.

Answer:

3