None.
No triangle has sides 10, 7, 2.
Because, the third side of a triangle must be greater than the difference of the two sides and less than the sum.
For example 10, 7.
The third , x > (10-7), x < (10+7)
x > 3, x < 17.
2 does not fall within the range, so the triangle of 10, 7, 2 does not exist.
