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30-60-90 Triangle
Move Point B
In a 30-60-90 triangle, the relationship between lengths is:
[b]a:b:c = 1:√3:2 [/b]
because c^2 = a^2 + b^2
=> 2*2 = 1*1+ √3* √3
4 = 1 + 3
=> 4 = 4 (both sides the same)