none of them are a right angle since there isn't an angle on any of those measurements that are 90 degrees.
Answer:
Well everybody's different but in my case, some challenges or hesitations I have is that I feel or believe that I can't do it sometimes, but, self confidence gets me out of those thoughts and I achieve but sometimes I nearly give up. That's why self confidence is so important, also, distractions like games and even some times friends can challenge you from achieving your goals
