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IB MAI HL Geometry & Trigonometry Topic 3.5 Geometric Transformations (id: fe75d

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admin 发表于 2024-2-17 20:39:05 | 显示全部楼层 |阅读模式
本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.5 Geometric Transformations,类别为 IB数学

[填空题]
A triangle with vertp+/)bhkt pr6uw( oj*v.jidr.9t6(b qk idou(ices $\mathrm{A}(-3,3), \mathrm{B}(3,2) $ and $\mathrm{C}(-1,1)$ is rotated $90^{\circ} $ clockwise about $ \mathrm{O}(0,0) $ and then enlarged by a scale factor of 2 .
The matrix $ \mathbf{E}=\left(\begin{array}{ll}2 & 0 \\ 0 & 2\end{array}\right)$ represents the enlargement with a scale factor of 2.
1. On the following grid, draw the image of the triangle A B C .

2.Given the area of the triangle ABC is 5 $units^2$, find the area of its image.    $units^2$




参考答案: 20±2%


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