중학교 2학년 2학기 기하 이것을 공략하세요!

It's very difficult to prove the resemblance of a triangle and a square by using the conditions of justice. Every time I do that, I say, I know you're having a hard time right now. But if you don't prove it here that you're going to go easy on this, When you learn the high school process or when you become a high school student, There's a bigger disaster. Let's do this with a firm heart. Hello, I'm a pig. It's still hot. I wear short sleeves during the day and long sleeves at night. I hope you take care of your health and study hard. Today, I'm going to talk about how to study for the second semester of the second grade. The second grade of the first grade, the second grade of the second grade, the third grade, the second grade. I'm talking about three of these. In fact, the second semester of the first grade is a little easier. Basic shapes, dotted lines, and so on. In fact, the second semester of the first grade is easy. So in the middle school math class, I'm going to start with the second semester of the second grade. I'm going to say that. From the second semester of the second grade, Parents worry or study hard. I'm going to talk about that part. I'm going to talk about the part of the promise by word. The second semester of the second grade. First of all, there's a triangle. Of course, this word is. It's a lot harder than the triangle I learned in elementary school. Outer and inner. Secondary triangle. And it depends on the subject. There are cases where Pythagoras is included. So the reason why it's getting very difficult for students from now on. I'm talking a lot about justice, temperament, and conditions. Secondary triangle justice. Secondary triangle temperament. Secondary triangle conditions. That's how I learned the famous words. What's very difficult is that the same sentence is in temperament and in conditions. So it's very difficult to distinguish these two. So when you first start a triangular unit, And when you first start a subordinate. The most important thing is that I have to distinguish between justice, temperament, and conditions. I think it's about understanding and using a different way of proving it. To put it simply, justice is a social promise. The reason my name is Go Dae-won is because my father and mother built it from the top. I became a high school student. Like the secondary triangle, the length of the two sides is the same triangle. It's just that the mathematicians who used to be there discussed it with each other. That's how we made a social promise. It's called justice. So I can't prove it. What is temperament? If you have justice, you must have it. If you have a secondary triangle, the length of the two sides is the same. If the length of the two sides is the same, you must have it. It's the same size as the bottom of the two sides, and the top of the two sides is the bottom of the two sides. But this is not a matter of detail. Because temperament knows that this is a secondary triangle, it starts to prove that the length of the two sides is the same. The condition of a secondary triangle is that I don't know if this is a secondary triangle. But if a triangle is satisfied with these things, it becomes a secondary triangle. Again, temperament starts with a secondary triangle. The condition ends with a secondary triangle. That's why the direction of these two ways of proving is completely different. But the sentence is the same, so students are most confused about this part. So, when you're talking about the first term, you need a lot of energy to distinguish between justice, temperament, and conditions. It can be much easier from the back, so I hope you use a lot of energy to distinguish between justice, temperament, and conditions. And this temperament is not going to be learned again later. There's a good chance it won't come back in high school, so I recommend you have a notebook that you've used at least once to prove it. Because 100% of the time, after 6 months or 9 months, you forget how to prove it. In that case, look back and say, I proved this at this time. It's very important to have a notebook or a concept note. And secondly, it's a square unit. In a square, there are a variety of different squares, such as a parallelogram, a rectangle, a rhombus, and a ladder. This is also the same. Parallelograms have both justice, temperament, and conditions. Various squares also have their own justice, temperament, and conditions. What's important here, too. For example, in the case of a parallelogram, The two sides of the parallelogram are parallel to each other. It's in temperament and it's in conditions. So if you lose your mind, you can't remember how to prove it when it's temperament or conditions. I think it's most important to distinguish justice, temperament, and conditions and prove them. It's almost the same story in a triangle and a square. And the third word is similarity. As you know, there are cases where students hate similarities the most. But if you look at the shape, you can't figure out if it's a similarity or not. And even in this similarity, Is it a basic temperament of similarity? Is it a double right triangle with two right angles? Is it a focus connection? Is it the center of gravity? You have to distinguish these things and use the right temperaments and formulas to solve the problem. The problem itself is a mixture of a triangle, a square, and a circle. So it's very difficult to find out what to write and solve for the similarity. From that point of view, I really recommend that you try to write a temperament and memorize it to the end. What that means is that students don't know how to solve it when they solve it. One of the reasons is that they can't think of the shape when they look at the problem. The best way to do that is to make the shape enough to practice and get used to it. And then when you look at the problem, you can see the shape and solve the problem. So if you don't have confidence and don't know well, Try to put the picture in your head as neatly as possible. If you use that temperament and get used to it as much as possible, If the formula I practiced is reflected like a manual, The student can definitely solve the problem. So in similarity, there are various pictures, I think it's important to draw it once and memorize it as much as possible with a notebook that organizes the formula. And lastly, there are cases and probabilities. Cases and probabilities are the dice we know, throwing, throwing coins, and so on. But the number of cases is just the number of branches. Because the probability is the number of cases, In the end, all you have to do is count this number. But what's a little difficult is that this part is really counting, It's not that the concept is important, Depending on how much the student usually has a sense of numbers, Because there are cases where the results change, In this unit, rather than memorizing a formula and making a template, Try to solve as many types as possible, If you study each type individually, Still, I think you can study with a little less confusion. I'm taking a lot of classes, Most students are in the second semester of the second grade, Triangular, square, resemblance, It's very difficult in the process of writing and proving the conditions of justice. Every time I do that, I say, I know you're having a hard time right now, But if you don't prove it here that you're going to go comfortably, When you learn the high school process or become a high school student, There's a bigger disaster, so let's do this hard with our hearts. Like that, I don't think there's a trick in the second semester of the second grade. Try to prove everything silently, It's the only way to practice putting it in your head. With time and will, I hope you will try this second semester of the second grade happily. If you have any questions, If you leave a comment, I'll try my best to answer. I'll be back with another good video next time. I support your education. I was Daechwita Castle. Thank you.