**Problem : **
Is the following polygon convex or concave?

**Problem : **
Is the following polygon convex or concave?

**Problem : **
Is the following polygon convex or concave?

**Problem : **
Is the following polygon convex or concave?

**Problem : **
A line *l* is the
perpendicular
bisector of one side of a regular
polygon. Besides the
midpoint of the
bisected
segment, where does *l* intersect the
polygon?

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