Term 4 Mid Term week 4

Well students....there are only a few weeks/days left of this school year. We have been working hard on proof and now studying our quadrilaterals.
Here is extra credit for these 2 weeks, due May 15. Please respond to this question. You may just post it on the blog here and I will check this to give you credit.
Respond: What is the purpose of studying proof? Give an example of the logical thinking and reasoning that you or your parents have used. Be sure to justify the step by step process.