Which diagram represents a line of symmetry for the regular pentagon?
A pentagon has a fold that goes diagonally from from the top left-point to the bottom right-point.
A pentagon has a fold that goes vertically from the top point to the midpoint of the bottom side. The fold forms a right angle with the bottom side and splits the bottom side into 2 equal parts.
A pentagon has a fold that goes horizontally from the top left point to the top right point.
A pentagon has a fold that goes horizontally through the midpoint of the bottom left side through the midpoint of the bottom right side. The fold splits the 2 sides into 2 equal parts.