Thursday

July 31, 2014

July 31, 2014

Posted by **lily** on Sunday, June 8, 2014 at 9:36pm.

- math -
**Reiny**, Monday, June 9, 2014 at 12:08amEuler said:

V + F - E = 2

so if

4 + 6 - E = 2

-E = -8

E = 8

It has 8 edges

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