正方形

And the geometry-patterns is using triangle, rhombus, and square,etc patterns to make

其中的几何图案就是指用三角形、菱形、正方形等图形组合而成的，如果装饰在墙壁上，远远看会产生立体的感觉。

Make sure they appear as squares, and not as rhombus, or with degenerated angles.

确认它们成正方形出现，而不是菱形或其他形状。

First fold each riband for one time. Leave space for a square.

先把每条丝带折叠一次，注意留出一个正方形的位置。

The figure shows a right pyramid with a square base.

附图所示的直立角锥体的底是一个正方形。

Pause the game, then hold L2 and press UP, LEFT, RIGHT, TRIANGLE, SQUARE, CIRCLE.

暂停游戏，然后按住L2和按向上，左，右，三角形，正方形，圆。

The square has 4 equal sides and 4 right-angle.

正方形有四条等边和四个直角。

Square has four equal side and four right-angle.

正方形有四条等边和四个直角。

Look at Picture 3.4—2. Compare the area of Square ABCD with the sum of the areas of four same right-angled triangles , and what inequality can you have?

阅读课本 P110，比较图3.4－2中正方形 ABCD 的面积与4个全等的直角三角形的面积之和的大小，你能得到怎样的不等式？

Record each move and record the instruction eg rotate 90 to the right.

每次移动记录指令，如：向右旋转90度）上课时，教师稍作解释，然后每个学生分发到一块积木和一张8开白纸，积木有三角形、有正方形、有长方形、有平行四边形，学生就按照白板上的要求认认真真制作了一节课。

A ANSYS microsoft is used to found the mechanical model of the trigonal, roundish and square hollow PET fibers.

本文应用ANSYS软件建立了三角、圆、正方形等不同中空形状纤维的力学理论模型。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。