Polygon ABCDE is a regular pentagon. When we say a polygon is regular we mean it has all sides
congruent and all angles congruent. Like a square has four congruent sides and four congruent
angles so a square could also be called a regular quadrilateral. The measure of each angle of an t-
sided regular polygon can be found using the formula
18-2)
m
D
Which choices accurately describe the measure of angle A'BC after translation of pentagon
ABCDE?