Question 42511
Base length = b
Equal leg length = 4b - 8
{{{(side) + (side) + (side) = Perimeter}}}
{{{(4b - 8) + (4b - 8) + (b) = 29}}}
{{{9b - 16 = 29}}}
{{{9b = 45}}}
{{{b = 5}}}
Equal leg length = {{{4b - 8}}}
{{{4(5) - 8}}}
{{{20 - 8}}}
{{{12}}}