Question

Regular octagon ABCDEFGH rotates 360° clockwise about its center. After how many 45° increments will A′ (the image of A) coincide with F?
options :

8

4

5

3

Answer 1

@Michele_Laino

Answer 2

I'm sorry I'm not able to open your file, can you do a drawing

Answer 3

Hint:
every 45 degrees rotation point A goes into the subsequent vertex, namely:
after one rotation we have A---> H, so H=A'
after second rotation A--->H--->G, so G=A'
and so on...

Answer 4

that wasnt much help because im not good at math , but thanks anyway @Michele_Laino

Answer 5

hint: