When you visualize a triangle, do you first notice the area and?
Youre all backwards. When you see a triangle, you should think triangle which can bring up a dozen different aspects, formulae, etc - but none just yet. The trick is to read the rest of the problem and see what is required of you - FOR SURE NOT to train you in whatever convention you just made up you should adopt. There are no official trinagels. NO triangle are officialler than others. Some are handier so dont overlook things that you know about particular types [right etc] when it comes time to figure out something.