The decagon has a _ -fold reflectional symmetry. The order of rotational symmetry for the decagon is _.

The smallest angle of rotational symmetry for the
decagon is _
degrees.

Which of the following transformations will make coincide with ? a. counter-clockwise rotation 90º about a, followed by a translation 5 units to the right b. translation 5 units to the right, followed by a reflection across the y-axis c. translation 5 units to the right, followed by a reflection across the x-axis d. translation 1 unit up and 5 units to the right, followed by a reflection across the x-axis