Aregular pentagon has rotational symmetry. what is the minimum number of degrees a regular pentagon must be rotated about its center in order to prove this? a. 45° b. 60° c. 90° d. 72°

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction