"Hmph, spend the belly of a gentleman with the heart of a villain!" Of course Zhao Xiaoshi wouldn't believe Tang Chen's words, she snorted coldly, and then took the test paper to herself and verified it seriously. If she doesn't finish this test paper tonight, I'm afraid she won't be able to sleep!

"Hehe!" Tang Chen didn't care, picked up the teacup on the side, took a sip, and found that it was already cold, Tang Chen stood up and prepared to go out and pour a new cup in. Of course, he didn't forget Zhao Xiaoshi, and also brought her teacup by the way.

Tang Chen poured two cups of hot tea in, put Zhao Xiaoshi's cup next to her, and sat down to drink tea while watching her perform in the draft book.

Zhao Xiaoshi is worthy of being a beautiful student, although her speed of solving problems is much slower than Tang Chen's, but compared to ordinary students, it is much faster. After all, this is no ordinary exam paper.

Although Zhao Xiaoshi solved the music topic, she was not happy at all in her heart, and even as the question progressed, cold sweat began to break out on her forehead.

Because of the time she spent solving the problem, it took more and more. From the first two minutes, to three minutes, and then to the five minutes of the penultimate question of the multiple-choice question, she used the formula to solve the problem with a lot of difficulty, and Tang Chen was still right.

This discovery shocked her heart, and at the same time, she also had a sense of self-shame. Because just now, Tang Chen wrote the answers to the multiple-choice questions and fill-in-the-blank questions in an instant!

Even though he had read the questions in a few minutes earlier, it only took him five minutes to solve all the questions of the two big questions in his mind!

It turned out that what he said was true! This test paper was indeed only at the level of kindergarten for him! The funny thing was that he not only laughed at him, but even signed a deal with him with his own cleverness. I originally wanted to trick him. But now if you don't get it right, you're going to get yourself into a pit. This is really lifting a stone to shoot yourself in the foot, and it is purely your own death!

Zhao Xiaoshi was solving the problem while secretly scolding herself in her mind. But at this moment, she seemed to be trapped by the last question of the multiple-choice question, and she quickly drove out the mess in her mind and solved the problem wholeheartedly.

But as time slowly passed. Zhao Xiaoshi's forehead began to ooze fine sweat. Because she was completely stumped by this question, she only made the beginning, and then she had no clue at all. Looking at Tang Chen's answer, she didn't know how to figure it out.

If she can't even get through the first big question, then she really wants to lose her face in front of this junior!

The more anxious I was, the more blank my mind became, something that everyone experienced when they were students in their exams. At this moment, Zhao Xiaoshi is in such a situation, she draws the graphics over and over again on the sketchbook, and keeps using line segments to depict them, but she just can't find a clue. The sound of her rapid breathing. Tang Chen knew that Zhao Xiaoshi's heart was completely messed up.

In fact, this problem can't be solved, not because Zhao Xiaoshi is not good, but because it is really difficult. As we all know, the last two questions of the general multiple-choice questions are relatively difficult, not to mention, this test paper is specially customized.

Tang Chen guessed that this question was the same as the additional question that followed. It should all be selected from the questions in those competitions. The reason why he was able to figure out the answer quickly was that he used advanced knowledge. And the experience of his past life.

Because he had also experienced countless sea battles in his previous life, he didn't know how many of these types of questions he had seen, so he knew where to start. In this way, if you bring the formula into it with advanced knowledge, you can get the answer quickly.

But Zhao Xiaoshi doesn't have his knowledge, let alone his perverted computing ability. This was the first time she had encountered this type of question. It must be a black eye, and I don't know where to start.

If they use the knowledge they have learned at this stage to solve this problem, they will have to use the Pythagorean theorem and the Pythagorean inverse theorem to substitute it and calculate it three times before solving it. Of course, there are two more auxiliary lines to be used in this.

Zhao Xiaoshi didn't know what to do because there was still an auxiliary line. That's why I can't solve it. How important the auxiliary line is, the student party knows best. If you don't know where to make auxiliary lines, you won't know which direction to go to solve the problem, even if you want to blow your head.

In fact, Zhao Xiaoshi can start well, because she also knows that this question needs to use auxiliary lines, so she has made a lot of attempts, but she has not completely done it.

In this problem, two lines are drawn from the two corners of the trapezoid to the midpoint of the side of the small rectangle at the same time, so that it forms a new right angle, thus dividing the small trapezoid into three small right triangles. In this way, the perimeter of the small trapezoid can be easily calculated according to known conditions.

Of course, as long as you make two lines, you can see at a glance that the new triangle in the middle is a right triangle. But academically, it is still necessary to prove step by step that the middle one is a right triangle, and here we will use the inverse theorem of the Pythagorean theorem.

Seeing that Zhao Xiaoshi was about to cry, Tang Chen took the notebook on the side, drew the figure on it with a pencil, and then drew two auxiliary lines. Then he pushed the notebook in front of Zhao Xiaoshi, he believed that as long as she read it, she would definitely come to her senses immediately.

Zhao Xiaoshi, who was originally anxious, suddenly lit up after seeing Tang Chen's prompt again. She was like a walker dying of thirst in the desert who suddenly found a source of water, and the power that was about to dry up was restored in an instant.

Sure enough, it didn't take long for her to figure out the answer. At this moment, she was relieved. Looking at the exact same result in the sketchbook as on the test paper, she was in a trance.

She raised her head and glanced at the notebook that Tang Chen had pushed over just now, and then turned her head to look at him.

Seeing Zhao Xiaoshi coming over, Tang Chen smiled at her and stretched out a thumbs up. It's not his sarcasm, it's genuine. As a normal junior high school student, Zhao Xiaoshi was able to solve all these problems in such a short period of time, which is already commendable.

As for the last question, if there is a normal second-year junior high school student who can solve it, it must be those so-called math demons.

Tang Chen didn't know what Zhao Xiaoshi meant, but she regarded his praise as sarcasm at this moment. After all, she couldn't have done it without his prompt just now. But he gave her a thumbs up at the moment, not sarcasm or what?(To be continued.) )