- #1
auk411
- 57
- 0
Homework Statement
How many points can be placed in an equilateral triangle where each side is of length 2 such that no 2 points are within 1 of each other?
Homework Equations
Need to use pigeon hole principle.
The Attempt at a Solution
I know that there are at least 3. Visually, if you sketch the triangle it looks like there will be a 4. However, I don't know how to prove this.