View full lesson: http://ed.ted.com/lessons/mysteries-o...

Whether we're talking all things unusual or mathematical, the origins of the word odd point to the Indo-European root uzdho, which means pointing upwards. Jessica Oreck and Rachael Teel explain the evolution from the term for a triangle to a number indivisible by two and, eventually, to the peculiar.

Lesson by Jessica Oreck and Rachael Teel, animation by Jessica Oreck.

• Category

  Education

• License

  Standard YouTube License