Regular octagon ABCDEFGH rotates 360° clockwise about it's center . After how many 45° increments will A' ( the image of the A coincide with F?

A.8

B.4

C.5

D.3

Question

Regular octagon ABCDEFGH rotates 360° clockwise about it's center . After how many 45°  increments will A' ( the image of the A coincide with F?

A.8

B.4

C.5

D.3

mathmate · Answer

It depends on how ABCDEFGH is labelled.
If it is named clockwise (same sense as the rotation), then you can figure it out by
1 45deg. rotation A coincides with B
2 45deg. rotation A coincides with C
3 45deg. rotation A coincides with D
...
etc.
Keep working this way and you should arrive at F.

anonymous · Answer

Its not 5 sooo..... what is it????????

anonymous · Answer

The answer is D. 3.