### rectangle

• n. 矩形；长方形
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rect-,直的，正确的，angle,角。

rectangle (n.)
1570s, from Middle French rectangle (16c.) and directly from Late Latin rectangulum, from rect-, comb. form of Latin rectus "right" (see right (adj.1)) + Old French angle (see angle (n.)). Medieval Latin rectangulum meant "a triangle having a right angle."
1. Suppose the width of a rectangle is x metres.

2. He handed me a little rectangle of white paper.

3. A squared rectangle is a rectangle dissected into at least two squares.

4. A torus can be obtained from a rectangle by identifying opposite sides.

5. The rectangle clearly shows each separate class in the distribution.