essay "长方形(rectangle)" 400 words, english translation and finally vocabulary

时间: 2024-09-18 11:31:36

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Here is an essay on "Rectangle" in approximately 400 words, with an English translation and vocabulary at the end.

长方形(Rectangle)

长方形是一种常见的几何图形,它由四条直线组成,每个角都是直角。长方形有许多特点和性质,它在日常生活中广泛应用。

长方形的四个角都是直角,这意味着每个角的角度都是90度。由于四个角都是直角,所以长方形的四条边也是相互垂直的。长方形的对边长度相等,即长边与长边相等,短边与短边相等。这种特点使得长方形具有对称性,可以沿对角线或中线折叠成两个完全相同的部分。

长方形的面积可以通过简单的计算得出,即长度乘以宽度。例如,一个长5米,宽3米的长方形,它的面积就是5米乘以3米,等于15平方米。长方形的周长也很容易计算,就是四条边的长度之和。对于上述的长方形,它的周长是(5米+3米+5米+3米)=16米。

长方形在生活中无处不在。房间、书桌、电视机、纸张等都是长方形的典型例子。建筑物的平面图通常也采用长方形的设计。此外,在工业和科技领域,长方形的应用也非常广泛,如电路板、显示屏、太阳能电池板等。长方形的简单性和实用性使它成为最常见和最广泛使用的几何图形之一。

English Translation:

The rectangle is a common geometric shape, composed of four straight lines, with each angle being a right angle. Rectangles have many characteristics and properties, and they are widely used in daily life.

All four angles of a rectangle are right angles, meaning that each angle is 90 degrees. Due to the fact that all four angles are right angles, the four sides of the rectangle are also perpendicular to each other. The opposite sides of a rectangle have equal lengths, meaning that the long sides are equal, and the short sides are equal. This characteristic gives the rectangle a symmetry, allowing it to be folded along the diagonal or the centerline into two identical parts.

The area of a rectangle can be easily calculated by multiplying the length and the width. For example, a rectangle with a length of 5 meters and a width of 3 meters has an area of 15 square meters. The perimeter of a rectangle is also easy to calculate, as it is the sum of the lengths of all four sides. For the aforementioned rectangle, the perimeter would be (5 meters + 3 meters + 5 meters + 3 meters) = 16 meters.

Rectangles are ubiquitous in our daily life. Rooms, desks, television sets, and sheets of paper are all typical examples of rectangles. The floor plans of buildings also often utilize rectangular designs. Furthermore, in the industrial and technological fields, the applications of rectangles are also widespread, such as circuit boards, display screens, and solar panels. The simplicity and practicality of rectangles make them one of the most common and widely used geometric shapes.

Vocabulary:

1. 长方形 (chángfāngxíng) - Rectangle

2. 直角 (zhíjiǎo) - Right angle

3. 对称性 (duìchèngxìng) - Symmetry

4. 面积 (miànjī) - Area

5. 周长 (zhōuchángr) - Perimeter

6. 典型 (diǎnxíng) - Typical

7. 平面图 (píngmiàn tú) - Floor plan

8. 实用性 (shíyòngxìng) - Practicality

9. 几何图形 (jǐhé túxíng) - Geometric shape

10. 垂直 (chuízhí) - Perpendicular