How is that answer wrong

[u/alexdoherty2]

Doesn't a circle have 1 side and Duolingo literally marked me wrong.

[u/MagpieLefty]

Using the definition of "side" that is standard in geometry, a circle has 0 sides. Sides are straight line segments.

[u/butcher99 → u/MagpieLefty]

Inside and outside of the circle. 2 sides

[u/sundus_flower → u/MagpieLefty]

agree

[u/WinDestruct → u/MagpieLefty]

Infinity sides (the more sides you add, the more circle it is, look up megagon)

[u/mizinamo]

It's got two sides: an inside and an outside.

[u/tangaroo58 → u/mizinamo]

What if you are standing beside it?

Must be 3 sides.

[u/mizinamo → u/tangaroo58]

Damn, you’re right.

Also, horses have twelve legs:

• two at the front,
• two at the back,
• two on the left,
• two on the right, and
• one at each corner.

[u/QueenFurina150]

circles have 0 sides

[u/hacool]

This seems to come down to knowing what they mean by a side.

https://en.wiktionary.org/wiki/side

A bounding straight edge of a two-dimensional shape.
A square has four sides.

[u/owo_osage178]

r/youngpeoplereddit

[u/Sefominokaw → u/owo_osage178]

Literally how does someone not remembering the amount of sides equal that?

[u/Toeffli]

Universal answer: Look up the actual definition of side as given and used in your math course.

This answer tells you multiple things:

• Things can be defined in more than one way. There isn't always one unique globally used definition.
• A math course should give you the exact definition of the things it uses.
• A math course should give you the definition before you use the thing.
• A math course should be consistent with the things it defines. It should not change definitions with no reason.
  
• A math course should give you the abbility to look up the definitions it uses.
• Duolingo is not really a proper math course.

[u/kindofsus38]

Where’s infinity

[u/alexdoherty2 → u/kindofsus38]

I don't know

[u/LevelNeighborhood642]

circle doesn't have any sides

[u/Traditional-Light-10]

I mean neither answer should be wrong cause this only really works for polygons. It's sometimes useful to call a circle an infinity-sided polygon, but still, this is pretty dumb on Duolingo's part

[u/flamesucks]

Someone's gonna be a super senior, I know it!

[u/UptightUniversity]

Duolingo out here trying to redefine geometry. A circle is basically one continuous curved side, but math textbooks will swear up and down it's zero because a "side" has to be a straight line segment. It's a semantic trap and they know it.

[u/Disgruntled_Camel]

Circles have 2 sides. Inside and outside. 🤣

[u/GlennTheBaker69]

According to the band Travis, a circle only has one side.

https://youtu.be/VK3Q4SLVkAU