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### Course: Math for fun and glory>Unit 1

Lesson 3: Hexaflexagons

# Hexaflexagons

Hooraaaay flexagons! Next hexaflexagon video in one week. Happy October!More info coming soon. Created by Vi Hart.

## Want to join the conversation?

• Is there any relationship between a Hexaflexagon and a Mobius strip?
• yes! The trihexaflexagon actually IS a mobuis strip! I've been thinking about your question for a while, and when I looked carefully, I got to every part of the three-sides-that-are-actually-one-side without going to the "other" side! Then I "opened it up"and saw that it was a mobius strip! Now if only I could make a bigger hexahexaflexagon (she gives instructions in the next video) so I could look at it...
Wait, am I only the second person to give the right answer for the right reason?
• Can you please show me how to make a hexaflexagon in slow motion?
• you can increase/decrease the speed of a video by clicking on the gear button. (Note: this only works on Google Chrome)
• Are they really called hexaflexagons/flexagons? If not, what are they really called?
• YES! That's what they are actually called. :D
• Is it possible to make a Hexaflexagon that has more than six sides?
• Yes, if you alter the angle of the triangle.
• I made a bunch of tri-hexaflexagons, and they look right, but the tape gets in the way of flexing. does anyone know how to prevent this problem?
• make ten triangles, use glue instead of tape. explained in one of her videos
• I've been attempting to make a hexaflexagon for at least an hour. Any tips?
• can you make a video on how to make one but slower
• (Sigh). I can't make a hexaflexagon, even after trying over and over, like, a billion times. I will ACCEPT DEFEAT! Is anyone else giving up? I don't see what good perseverance will do me. But I do have an idea that could help you if you want. Maybe it will be helpful, but it didn't work for me.
• Can u make a Octoflexagon?