無(wú)錫GRE培訓(xùn)課程在哪學(xué)？GRE數(shù)學(xué)是大家較容易拿分的，但對(duì)于部分同學(xué)來(lái)說(shuō)，數(shù)學(xué)卻是需要努力復(fù)習(xí)爭(zhēng)取不拉分的部分。下面就由給大家?guī)?lái)GRE數(shù)學(xué)中按比例看圖的分析。希望對(duì)大家備考有所幫助。

無(wú)錫GRE培訓(xùn)課程在哪學(xué)

為了給學(xué)員提供更專業(yè)的學(xué)術(shù)支持，朗閣教育(Longre)先后成立了從事海外考試教學(xué)研究的學(xué)術(shù)機(jī)構(gòu)朗閣海外考試研究中心(RAFLE)以及專注德法西意及日韓語(yǔ)研究的小語(yǔ)種教學(xué)研發(fā)中心，為廣大考生在復(fù)習(xí)備考、資料下載、考題跟蹤及業(yè)界動(dòng)向等方面提供咨詢。

以下，是GRE官方指南(OG)中有關(guān)什么是按照比例，什么不是按照比例繪制的說(shuō)明(或者說(shuō)是important assumptions)

1. Geometric figures, such as lines, circles, triangles, and quadrilaterals, are not necessarily drawn to scale. That is, you should not assume that quantities such as lengths and angle measures are as they appear in a figure. You should assume, however, that lines shown as straight are actually straight, points on a line are in the order shown, and more generally, all geometric objects are in the relative positions shown. For questions with geometric figures, you should base your answers on geometric reasoning, not on estimating or comparing quantities by sight or by measurement.

2. Coordinate systems, such as xy-planes and number lines, are drawn to scale; therefore, you can read, estimate, or compare quantities in such figures by sight or by measurement.

3. Graphical data presentations, such as bar graphs, circle graphs, and line graphs, are drawn to scale; therefore, you can read, estimate, or compare data values by sight or by measurement.

簡(jiǎn)而言之就是：幾何圖形未必按照比例繪制，但是坐標(biāo)系和圖表題是按比例繪制的。

到底是怎樣的，我們?cè)诨仡^看一下官方有關(guān)幾何圖形的題目的出題前提：

Geometric figures, such as lines, circles, triangles, and quadrilaterals, are not necessarily drawn to scale.

但是后面注意，有however!(注：這是感嘆號(hào)，不是factorial)

however, that lines shown as straight are actually straight, points on a line are in the order shown, and more generally, all geometric objects are in the relative positions shown.