Which figure has an order of reflectional symmetry that is greater than 4 ? Isosceles trapezoid Rectangle Equilateral triangle Regular pentagon

Step 1 ：The order of reflectional symmetry of a figure is the number of times the figure can be reflected over a line and still look the same.

Step 2 ：An isosceles trapezoid has an order of reflectional symmetry of 1, because it can only be reflected over a vertical line through the middle of the figure.

Step 3 ：A rectangle has an order of reflectional symmetry of 2, because it can be reflected over a vertical line through the middle of the figure and a horizontal line through the middle of the figure.

Step 4 ：An equilateral triangle has an order of reflectional symmetry of 3, because it can be reflected over three different lines, each passing through a vertex and the midpoint of the opposite side.

Step 5 ：A regular pentagon has an order of reflectional symmetry of 5, because it can be reflected over five different lines, each passing through a vertex and the midpoint of the opposite side.

Step 6 ：So, the figure with an order of reflectional symmetry greater than 4 is the regular pentagon.

Step 7 ：Final Answer: \(\boxed{\text{Regular pentagon}}\)