How should a triple bond be depicted in skeletal structures? Draw the skeletal structure for the following compound:
  $$\ce{HOCH2CH2OCH2C#CCH2CH(CH3)2}$$


I can't figure this out. 

I can draw it up until the triple bond. My professor marked off because the triple bond was not drawn correctly. 

So, is the triple bond depicted any differently from the other bonds in the molecule? If so, why?
My guess, is that you forgot to take the linear disposition of the carbon-carbon triple bonds into consideration. 

So the bond lines cutting through four carbon atoms will be linear, and not zig-zagged as in the rest of the molecule (the latter implies tetrahedral geometry accorded by the $sp^3$ carbon-carbon bonds)



The first diagram may feel more "graceful" (the term I used when I defended my incorrect depiction of the triple bond to my teacher when he asked me a similar question a while back), but it is incorrect.