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a rectangle [dimensions]
尺寸直接放在名词后，不加介词。
Draw a rectangle 10 cm by 5 cm.
画一个长10厘米宽5厘米的长方形。
矩形；长方形
先理解核心含义，再看它在真实句子里的用法。
矩形；长方形
a flat shape with four straight sides and four right angles, with opposite sides parallel and equal
Draw a rectangle 10 cm by 5 cm.
画一个长10厘米宽5厘米的长方形。
对边平行且四个角均为直角的四边形。
Any quadrilateral having opposing sides parallel and four right angles.
具有四个直角的平行四边形
a parallelogram with four right angles
长宽不等的矩形(即非正方形的矩形)。
Such a quadrilateral that is oblong (longer than it is wide): one that is not regular (equilateral), that is, any except a square.
The garden is shaped like a rectangle, so we measured its length and width.
这个花园是长方形的，所以我们测量了它的长和宽。
She drew a rectangle on the whiteboard and labeled the corners A, B, C, and D.
她在白板上画了一个矩形，并把四个角标为 A、B、C、D。
Fold the paper in half to create two smaller rectangles.
把纸对折，就会得到两个较小的长方形。
尺寸直接放在名词后，不加介词。
Draw a rectangle 10 cm by 5 cm.
画一个长10厘米宽5厘米的长方形。
A rectangle with four right angles is a special case of a parallelogram.
具有四个直角的长方形是平行四边形的一种特殊情况。
表示形状变化时常用介词 into。
Fold the paper into a rectangle.
把纸折成长方形。
Not this
This is a rectangle shape.
Use this
This is a rectangular shape.
错误将名词'rectangle'直接用作形容词修饰'shape'，正确用法是使用形容词'rectangular'。
Not this
A rectangle has all sides equal.
Use this
A rectangle has opposite sides equal.
混淆了矩形和正方形的性质：矩形只有对边相等，并非所有边都相等。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
矩形的面积
The area of a rectangle is calculated by multiplying its length by its width.
矩形的面积通过长度乘以宽度来计算。
矩形的周长
The perimeter of a rectangle is the sum of all its sides.
矩形的周长是其所有边长之和。
画一个长方形
Draw a rectangle with a length of 5 cm and a width of 3 cm.
画一个长5厘米、宽3厘米的长方形。
长方形形状
The table has a rectangle shape.
这张桌子是长方形形状的。
在长方形里
The children sat in a rectangle on the floor.
孩子们在地板上坐成一个长方形。
长方形（的）
He cut a rectangle of fabric.
他剪了一块长方形布料。
Use rectangle naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
将 rectangle 拆成 rect 和 angle，想象 rect 代表“直”（直角），angle 是“角”，合起来就是“直角形”即长方形。
语域：neutral 常见场景：geometry、everyday description、design “rectangle”是几何学标准术语，表示长方形或矩形，在学术和日常语境中均常用，语域中性。
All listed words share the exact ending /-æŋɡəl/ as in 'rectangle'. Beware of 'angel' (/ˈeɪndʒəl/) which looks similar but is pronounced differently.
Dictionary facts from ECDICT, WIKTIONARY.