It's no use doing exercises.
The senior high school entrance examination is mainly based on many basic questions.
First of all, make sure that all the previous questions are correct.
But in the end, there are usually no traps or anything.
If there is a trap, it will also be in the basic problem.
Usually there is a simple little problem in the finale.
And these small problems are the key to solve the latter.
So make a mountain out of a molehill first
So if it is a combination of moving points or numbers.
It is usually solved by similar or right-angled triangles.
Then you can draw auxiliary lines or directly find similar triangles.
If you can't find it, you must use a right triangle to solve it.
If you really can't think of anything,
Then you need everything you can.
Get as many points as possible.
Anyway, you must know
You can't ask questions.
No one else can do it
Never affect the mood of the next exam.
In short, I wish you good luck in the middle school entrance examination!
It's easy to make mistakes in the final exam of mathematics and physics. You'd better go to the library to look for it.
If you send me a few finale questions, this post won't open.
Word version in the library can be downloaded and selected at will.
: wenku.baidu search? word = % D6 % D0 % BF % BC % CA % FD % d 1% A7 & amp； lm = 0 & ampod=0
Listen, search again.
Just a little advice.
The mathematical finale of the senior high school entrance examination generally refers to the big questions that appear at the end of the test paper. There are finale questions in the formal exams of mathematics and physics. This kind of topic generally has many scores, is difficult, has strong comprehensive test ability, can open students' scores in the exam, and is also the key research project of many students and teachers.
Generally speaking, there are usually three short-answer questions in the final exam of senior high school entrance examination, the first of which is relatively simple and easy for middle-level students to solve.
So don't be afraid when you see the last question. You can still get two or three points if you win the first question. The second question is usually a bit difficult, and you usually need to use the conditions and conclusions of the first question, so if you can't do the first question, don't mention it later. The third question is the most difficult, testing students' comprehensive ability.
If you can't do the last math problem in the senior high school entrance examination, write out the theorems and formulas you know about this problem as much as possible!
You can log in to Rubik's cube pavilion. study
Go to the library and look for it yourself.
: wenku.baidu search? D6 % D0 % BF % BC % CA % FD % d 1% A7 % d 1% B9 % D6 % e 1% CC % E2 & amp； lm = 0 & ampod = 0 & ampfr=_home
Of course, you can also search 20 12 or 211year.
Deception ... upstairs ...
Forget it, let's not talk about anything else. Individuals always assume that there are many points (2~4) when doing this kind of problem (it exists anyway ... otherwise the problem will be so boring. )
Then, according to the hypothesis, what conditions are needed for the existence, such as: this can exist when something is similar, congruence, equal angle, special angle ... and so on!
Then follow the reverse thinking and assume all the conditions you want. Suppose the conditions meet the meaning of the question, and then see if the points that meet the conditions are on a parabola, which is generally the case. .......
There should be a lot of time for the senior high school entrance examination, so check more.
In addition, your mentality should be flat, and when it comes to the real exam, people who fail in psychological quality may be brushed off.
So when you encounter this kind of problem, step by step, don't worry, discuss it in categories, and calculate it as you want.
At this time, it is necessary to practice more and accumulate a sense of questions. Quantitative changes cause qualitative changes, and it is only when the exam is real that we can calmly deal with it.
Wish you success!
1ef = ordinate of point f of bo line.
2 triangle HFO is similar to BFG.
High/low coordinates
Pom is in a straight line.
It is more convenient to ask the class teacher directly about the exam results. There are too few places to find online, and there are even fewer places to ask for you. Ask the teacher and the teacher will tell you. I wish you progress in your study.
(1) omitted
(2) According to the symmetry, ∠ PAE = ∠ PAB = 20, AE=AB=AD.
⊿ADE is an isosceles triangle, ∠DAE=∠PAE+∠PAB+∠BAD= 130?
So ∠ ADF = (180-130)/2 = 25?
(3) connect BF to AD to g.
Starting from symmetry, ∠FEA=∠FBA, and from (2) conclusion ∠FEA=∠FDA.
So ∠FDA=∠FBA, then ∠BGA=∠DGF.
So ∠DFG =∠ package =90?
In the right triangle BFD, BD? = BF？ +FD？
By symmetric BF = FE, square diagonal BD? = 2AB？
So 2AB? = FE？ +FD？