Solve a right triangle

There are a variety of methods that can be used to Solve a right triangle. The author of this book is Euclid, a famous mathematician in ancient Greece who is known as the father of geometry. The original of geometry has been used as a textbook of geometry for more than 2000 years. Euclid was the first person to systematize, systematize and scientize geometry. Non Euclidean geometry first proposed the curved space, which created the premise for the generation of the wider Riemannian geometry, which later became the mathematical tool of Einstein's general theory of relativity.

For the dilapidated relocated houses, they shall be resettled according to the original housing area standard. If the building area of the relocated houses is the same as the original building area. According to the housing reform in that year, after deducting the length of service and adjustment factors, the building area of the relocation house exceeds the original building area, but does not exceed 15 square meters per capita. The excess shall be calculated according to the housing reform.

For students who learn better, it is equivalent to sending points. They don't need to think much. The ideas are ready-made, and the scores should be basically obtained. The big problem of solid geometry is also very familiar, and it is not difficult to get points. [basis for postponement] the investigation of solving triangles in the national volume is generally geometric and pure algebraic rotation.

It is not advisable to do a lot of questions without thinking, finish the questions, and finish the answers. When you find that the answer is incorrect, don't worry about the steps written in the answer. Because there may be many ways to solve the problem. You and the answer may be different, but they may all be correct.

Otherwise, if we encourage the sprouts, copy mechanically, and turn the solution of geometric problems into a set of formulas, we will have no way to start when facing complex problems, which is harmful to mathematical learning. This is what Dad wants to explain to you. People usually think that quick oral arithmetic and familiar formulas is a standard of strong mathematical ability. In fact, it is only the ability to solve problems (computational ability) in mathematical ability, and it can not be directly equivalent to mathematical ability itself. We should know that the Olympiad is solved in the known field and the fields award is solved in the unknown field.