In daily study, you must practice more, because many questions are similar. If you give an example, you can draw inferences. If you really can't, read more answers, because this will improve your problem-solving skills and enrich your problem-solving methods, so that you won't be at a loss. Generally speaking, there are the following methods for comprehensive questions: ① If you want to find out when P is located, what is a right triangle, an isosceles triangle diamond, etc. , some need to set point coordinates, or according to the relationship between side and side length, or according to the properties of related graphics (such as diagonal bisector of parallelogram, etc.). ); ② The applications of trigonometric functions, similarity, congruence, Pythagorean theorem and Vieta theorem are reflected in many comprehensive problems. Generally, trigonometric functions should be considered first. Require improved computing power. (3) If you want to find out where the Q point is and what the circumference of △ABC is the smallest, you usually turn it into a straight line (translation, rotation, symmetry and congruence make several sides turn into a straight line), or use a function to express the length of three sides, and find the maximum or minimum value through formulas or function properties. When you find out where the point is, the area of the circle is the smallest, which is actually the shortest radius (many questions have implicit conditions,)
Next, let's talk about the method of taking the exam. ① The comprehensive questions are too difficult. Teachers have to do it for a long time. They should learn to give up and check in the rest of the time. Otherwise, you make a mistake and make a scene. Make sure the front is clear.
(2) Some questions ask, "Is there such a point that makes. . . "or" the quantitative relationship between MB and MA "and so on. Don't empty it if you can't do it. Generally speaking, if you want to write "existence" (rarely non-existence) or "equality", it is easy to get the conclusion score of 1
(3) You probably know how to do some questions, but if you don't know how to prove one of them, just write "easy to get" and "verifiable" (for example, verifiable △ABC is a right triangle), and the result will only deduct you a small step at most, not all.
Haha, that's probably how I took the exam. I was actually reviewing for myself when I told you.
Don't reprint ~ ~ ~