How many isosceles triangles with total side length $100$ are there? Let the sum of the three sides of a triangle be $100,$ and all the sides are positive integers length, how many possible isosceles triangles are there?

x=2*a+100-2*a if (100-2*a)

2*34+32=100
2*35+30=100
2*36+28=100
2*37+26=100
2*38+24=100
2*39+22=100
2*40+20=100
2*41+18=100
2*42+16=100
2*43+14=100
2*44+12=100
2*45+10=100
2*46+8=100
2*47+6=100
2*48+4=100
2*49+2=100
number of solution: 16
