Jiang Nan glanced sideways at Ren Zitao, and counted a little bit in her heart, she seemed to know how to do this, don't look at mathematics and throw it away over the years, but if she reads computers, she is definitely a hundred sets better than these rookie children now.

To get out, come on.

Jiang Nan began to draw the outer circle on the straw paper, and then extended the angle bisector like this, so that the extension angle bisector line, a hammer in the east and a stick in the west tried to find a way to crack it.

Ren Zitao raised his eyebrows, well, the first step is good, at least the idea is good, and you can get a special conclusion if you delay it, and when she wanted to look at Jiang Nan, the pen in the girl's hand stopped and scratched her head.

Tuan Bar Tuan Papyrus, re-drawing, Jiang Nan, who had three drawings and two paintings, began to bite the tip of the pen again, muttering in his mouth: "No, I should be able to do it, huh?" Why is the brain empty? ”

"I'll do it."

"Don't make any noise!" Jiang Nan twisted his small brows and drew a large circumscribed circle again.

In Ren Zitao's eyes, Jiang Nan's appearance was exactly the same as those big fools in his class.

"Man, don't waste my time."

Jiang Nan was anxious, dropped the pen, his face was not red, he was not panting, and he was not ashamed to ask:

"Why are you so difficult? Sincerely don't want me to go out, do you? Is this what we learned? I haven't even gone to college. ”

Ren Zitao sighed and touched Jiang Nan's head: "This is the knowledge point of our junior high school." As if he was not done with Jiang Nan, he paused and added: "Your arts and sciences are almost the same, it turns out that the arts and sciences are very bad." ”

"You?"

"In class, I have to teach you a lesson, or I will be told by a school that my sister is a shame."

"I haven't borrowed your light yet, so do you dislike me? Ren Zitao, I can pretend that I don't know you, we don't know each other. ”

"I'm familiar with you, Jiang Nan."

Ren Zitao instantly warmed his brother's face and turned into a serious face: "Nothing is more important than your study, what are you busy with?" What could be more important than which university you go to in the future? Our peace and health will be good in the future, which is worth it for our parents to pay no matter how much they pay. ”

Jiang Nan also sank his face and glared at Ren Zitao.

However, Ren Zitao seemed to feel it, dragged the stool and sat next to Jiang Nan, and forced the ballpoint pen into Jiang Nan's hand.

The girl didn't hold it well, so he grabbed the girl's right hand with both hands and motioned to hold the pen tightly to listen to the lesson.

"For example, in mathematics, I think 120 points in the college entrance examination are given away in vain, and only 30 points are based on personal ability."

Jiang Nan rolled his eyes: It's all you, she only scored more than eighty points in the last life, and if it was really like that, it would be all seedlings of Tsinghua University and Peking University.

"Don't believe me? Little girl, the root of all things, any discipline must master the basic knowledge formula and learning routines, not you can simply memorize it, to understand the derivation process of basic knowledge, it is best to guess the teacher's ideas, with points with lines, with lines with surfaces, often to summarize the knowledge framework will slowly develop this kind of thinking. ”

Jiang Nan interrupted speechlessly: "If you want to teach it, just talk about the point." ”

"No conscience, you've changed recently."

These words with the temperament of a resentful woman suddenly came out of Ren Zitao's mouth, almost making Jiang Nan, who was still angry a second ago, laugh.

Ren Zitao continued with a straight face:

"The point is that I'm emphasizing that the relationship between the topic and the basics is very subtle, and like a crush, it's not easy to see.

The routine is that the person who is always crushed will sum up the experience, and the other party will look at you with a shy smile and stuff an eraser into your desk to understand whether she likes you or not.

Then learning is also, the routine of mathematics includes: straight line equations must remember to discuss the slope, straight lines and conic curves of the problem of simultaneous equations, must remember to discuss whether the quadratic coefficient is zero, and the discriminant formula is greater than or equal to 0?

Form such thinking, learn the routine, you will be able to discern at a glance why the other party is good to you, like you is true or false, you will not be able to see the height of the eyebrows, and there will be no more situations where you will not be able to do it when you see the question. ”

Jiang Nan took a note and said while taking notes: "What other routines, like linear equations, all subjects will help me summarize them, please." ”

She still wants to fight hard for the college entrance examination in this life, and changing her fate is a matter of dying and not running, but taking the entrance examination to a prestigious school is not a struggle.

If you can be admitted to a famous college, then your old face will not shine?

Ren Zitao said with some disgust: "Why are you taking notes?" I'll let you do the questions. ”

"But if I write down your routine, I'll probably have to exhaust my energy."

"Forget it, I haven't taken notes all the time, so I'll borrow a complete set for you from the second year of junior high school."

"Huh?" Jiang Nan was even more surprised, and immediately changed his name to Brother Zitao, and did not forget to instruct: "Then don't forget to borrow a girl's one for me, you have to study the top five carefully in handwriting, what's the matter?" Confused? Can't borrow? ”

Ren Zitao touched the back of his neck, a little confused: "I only pay attention to who is in the top three of the school year, and how many scores I throw off, I really don't pay attention to the few girls who meet your conditions usually take the test, anyway, they are all hard-working players." ”

"What? Only care about the top three? Jiang Nan scratched the tip of his nose: "People say that frogs don't know the ambitions and tastes of goshawks, and you drag them like this, it's really annoying." So the question is, may I ask what kind of image do we have in the eyes of your scholars? ”

"Before the exam, I lit the lamp and boiled oil, my eyes were blank, and I swore that I must take as many places as I took the test, and when the results came down, many people buzzed in my ears, and there were two fools shouting: Let me die. I'm also wondering, what are you busy with? ”

After speaking, Ren Zitao wrote on Jiang Nan's inscription paper: ∠OO1O2=∠BAD=∠CAD=∠OO2O, the key steps: one is to prove that the rotation is similar, and the other is to prove that the four points are in a circle.

Jiang Nan glanced at it, blinked, and empowered.

But stupid people are indeed stupid, stupid people also have stupid methods, and they would rather take detours when they are persistent.

It took her ten minutes to extend the bisector of the angle she had drawn, and to connect it back and forth, and to make three obtuse triangles that were isosceles, Jiang Nan smiled much more arrogantly than Ren Zitao, raised his chin slightly, and said with an amazing look:

"You see I'm okay with this, I'll just say, I will, this can prove the similarity if you turn it upside down, and you forgot it when you rushed me."

"Okay, let's sneak out then, where are we going?"

"We? I won't take you. ”

"Man, you've changed."

"Brother Zitao, you have also changed, can you stop talking like that? It's scary. ”

……

On the streets of Fourteenth Street, a tall, thin boy helped a girl who was getting out of a taxi.

When the two of them were standing in the empty room, he heard the tall and chubby girl speak very clearly and scolded, "Damn! ”

The empty house, the scolding is echoed, and Ren Zitao looks sideways.

Before, you don't have to go too far, just last month, this fat sister seemed to have a crush on him, not to mention such rude scolding, even if you talk to him a few more times, you will be so shy that you blush.

But look at the present......

"I'm C!" Jiang Nan continued to be furious, kicked down the stool in the corner to vent his anger, and took out the diary in his leather bag, and at the same time stretched out his hand and said to Ren Zitao: "Lend me your phone." ”

"Hello? Yang Lei, do you have a brother in Daxinganling? Don't pretend to be stupid with me, when I was a child, I just didn't blow that, is he still a blind streamer? Don't talk nonsense, within half an hour, you go to the Island Cafe at the corner of Fourteenth Street to find me, and I will give you 100 yuan on time, and 10 yuan will be deducted ten minutes later. ”

Yang Lei on the phone asked in a daze: "Who are you?" ”

"Jiang Nan."

"Three-layer meat, if you dare to tease me, I'll ...... See you or leave you! ”