What I've Learned in Chapter 10

      So far, in chapter 10, I've learned a whole lot about circles and their measures. I've learned that there are more than just the 360 degrees inside and outside the circle. I now know that circles can have major and minor arcs, inscribed angles, tangents that are perpendicular to the radius, secents that intersect the circle in two points, and so much more. I know how to find the measures of all of these now as well. Some careers that use circles and their measurements are: carpenters and math teachers. At some point in their job span, carpenters will have to build a round table or a round window of some sort, and to match the measurements of what the buyer wants, they'd have to know how to work with circles. Math teachers use circles, usually in geometry, to teach students how to find the angles and whatnot. One question I still have is if we're working a problem with secents, and it's like theorem 10.12, where they might give us the arc measures, couldn't the angle inside just be one half of the given arc since it's inscribed? (Or is it even inscribed....?) If you didn't get my question, I'll just draw it out in class.