@divinedolphin Thank you very much for pointing this out. The image in the question is incorrect; it happens to be the solution image. I've updated the exam with the correct image now. Finding the lengths of the highlighted sides is meant to be an intermediate step in the solution. The correct exam image should be this:

@enchantedcondor-0 Thank you! Luckily someone else pointed this error out already, so I have it on my list of things to do already. I'll get to it, I promise! 🙂

@smartlion Ah, I see what you mean now! Yes, you are exactly right! I will put this on my list of things to fix. Thanks so much for finding it and for telling us. 🙂