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汉语拼音：zhèng fāng xíng

四边相等，四个角都是直角的四边形。正方形是矩形和菱形的特殊形式。

1. 四边相等、四角为直角的四边形。

• It has hard buttons and a square shape again (the last model nixed both in favor of a smaller design).

  它使用按键按钮，再次回归到正方形的外型（原先那款为缩小尺寸而放弃了这两种设计）。

• The Egyptian pyramids are massive monuments with a square base and four triangular sides rising up to a point.

  埃及金字塔是巨大的历史遗迹，这是以正方形的为基底、四面成三角形不断上升直到汇聚到一点。

• The linear, or grid, layout, with square or rectangular areas separated by parallel streets, is often used.

  一般常规的设计是采用线状或者网格状的布局，利用平行街道划分出一块块正方形或者长方形的区域。

• The same thing would happen if you were to treat in the same way a Triangle, or Square, or any other figure cut out of pasteboard.

  如果你以同样的方法，用一个从硬纸板上剪下的三角形或正方形做实验，相同的事情会再次发生。

• It makes a square on the screen just as you asked it to, but what if all your squares are not the same size?

  它按照你的要求在屏幕上画正方形，但是怎样才能让你的正方形边长不相等呢？

• A classic pear shape is narrow at the top and wide at the bottom of the face. The jaw and chin tend to be more rounded than square.

  典型的梨形脸是头顶部窄、脸底部宽。下颚和下巴往往要比正方形更远。

• In this paper, we give a method for cutting out a maximal equilateral triangle from a square and a strict proof of this method.

  给出从给定正方形中裁出边长（或面积）最大的正三角形的方法及其严格证明。

• The area of the small square shown below is 12 square dm, how much is the area of the shadow?

  如图小正方形的面积为12平方分米，求阴影部分的面积？

• Conference room with a large area, as well as by the traditional Japanese tatami and paper into a square mat.

  会议室内设有一张大面积榻榻米以及由日本传统和纸制成的正方形垫子。