Answer:
a. yes
b. no
c. yes
d. yes
e. yes
f. no
Explanation:
a regular polygon must be equiangular (all angles are same) and equilateral (all sides are same)
A. equilateral triangle, regular
B. is a rectangle and the sides of rectangle are not all equal, thus, not regular
C. octagon, regular
D. flipped pentagon, regular
E. square, regular
F. not normal pentagon, not regular