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习题练习:IB MAI HL Geometry & Trigonometry Topic 3.5 Geometric Transformations



 作者: admin   总分: 12分  得分: _____________

答题人: 匿名未登录  开始时间: 24年02月17日 21:17  切换到: 整卷模式

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1#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A triangle with vertices xq o .wiye/d dam4nqytma21 n;j; dm,v+e9:x+ A(6,6), B(3,1) and C(1,3) is transformed by x′=Ax+b
where A = $\begin{pmatrix}
-1&2 \\
-2&1
\end{pmatrix}$and b = $\begin{pmatrix}
-6 \\
3
\end{pmatrix}$.
1.On the following grid, draw the image of the triangle ABC.




2.Given the area of the triangle ABC is 16 $units^2$, find the area of its image.    $units^2$

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2#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A triangle with verticeyfkfdtj bxt7t l/8mo0mhx t05va*r+,jw+b1; s $\mathrm{A}(2,5), \mathrm{B}(6,-5) $ and $\mathrm{C}(-4,-5)$ is transformed by $\mathbf{x}^{\prime}=\mathbf{A} \mathbf{x}+\mathbf{b}$ where $\mathbf{A}=\left(\begin{array}{cc}1 & -0.2 \\ 0.5 & -0.4\end{array}\right)$ and $\mathbf{b}=\left(\begin{array}{c}-1 \\ -2\end{array}\right)$ .
1. On the following grid, draw the image of the triangle A B C .

2.Find the area, in square units, of the image of the triangle ABC.    $units^2$

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3#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The geometric transformat;sk ljb* ,/vkzion $ \left(\begin{array}{l}x^{\prime} \\ y^{\prime}\end{array}\right)=\left(\begin{array}{ll}2 & -3 \\ 5 & -2\end{array}\right)\left(\begin{array}{l}x \\ y\end{array}\right)+\left(\begin{array}{c}-4 \\ 1\end{array}\right) $maps points with coordinates (x, y) to points with coordinates $\left(x^{\prime}, y^{\prime}\right) $.
1. Find the coordinates of the image of the point:
(1) A(1,-6) ;(a,b) a=   b=  
(2) B(3 b, b) where $b \in \mathbb{R}$ .(a,b) a=   b=  
2. Determine the coordinates of point P whose image is $P^{\prime}(11,22)$ ;(a,b) a=   b=  

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4#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A linear transformation maps the point A(2,3) ;ssy6 7;mp.v -dndcclji3u- rto A ′(2,−5) and the point B(−2,1) to B ′(6,9). Determine the linear transformation, giving your answer in the formsyld; ;d67p.uvsnr-m-icj c3 x′=Ax where A is a 2×2 matrix.
参考答案:    

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5#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circle defined by the equabhlb9 f pvp+-9tion $x^{2}+y^{2}=\frac{20}{4}$ is horizontally stretched by a scale factor of $\frac{8}{5}$ and then translated by the vector $\left(\begin{array}{l}0 \\ \frac{5}{2}\end{array}\right)$ .
1. On the following grid, draw the image of the circle.

2.Find the area of the image of the circle, giving your answer in terms of π.    π

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6#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circle defined by thev4-sd ex;b3qj equation $x^{2}+y^{2}=\frac{y}{4}$ is vertically stretched by a scale factor of $\frac{10}{3}$ and then translated by the vector $\left(\begin{array}{c}-3 \\ 0\end{array}\right)$ .
1. On the following grid, draw the image of the circle.

2.Find the area of the image of the circle, giving your answer in terms of $π$. $\frac{aπ}{b}$ a =    b =   

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7#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A triangle with vertices A(3,5), B(5,2) and C(3,2) is rotateds *vaz:s5vwq, jjl m;tr-.s0o $90^{\circ}$ anticlockwise about O(0,0) and then reflected in the line y=−x. The rotation is represented by matrix A and reflection by matrix B.
1.Write down the matrix :
(1)A; $\begin{pmatrix}
a&b \\
c&d
\end{pmatrix}$ a =    b =    c =    d =   
(2)B.$\begin{pmatrix}
a&b \\
c&d
\end{pmatrix}$ a =    b =    c =    d =   
2.Find the matrix that represents the rotation followed by the reflection. BA = $\begin{pmatrix}
a&b \\
c&d
\end{pmatrix}$ a =    b =    c =    d =   
3.On the following grid, draw the image of the triangle ABC.



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8#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Parallelogram ABCD is translated *zx)k-s xml5pby the vector $\left(\begin{array}{l}1 \\ 4\end{array}\right)$ , then enlarged by a scale factor of $\frac{3}{2} $ from the origin and then reflected in the y -axis.
1. Determine a single transformation that maps the parallelogram A B C D to its image. Give your answer in the form
$\mathbf{x}^{\prime}=\mathbf{A} \mathbf{x}+\mathbf{b} \text {. }$
The area of the image is equal to k times the area of parallelogram A B C D .
2. Find the value of k .$\frac{a}{b}$a =    b =   

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9#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A triangle with vertices g:kx*ano + : ji+ c3zmx6zwel;$\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.    $units^2$

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10#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Trapezoid PQRS is translated by thewsu+ io.eg4skzer3 5neg58 i , vector $\left(\begin{array}{c}-7 \\ 2\end{array}\right)$ , then vertically stretched by a scale factor of $\frac{5}{3}$ and then reflected in the x -axis.
1. Determine a single transformation that maps the trapezoid PQRS to its image. Give your answer in the form $\mathbf{x}^{\prime}=\mathbf{A x}+\mathbf{b}$ The area of the image is equal to k times the area of the trapezoid PQRS.
2. Find the value of k . $\frac{a}{b}$ a =    b =   

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11#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider the geometrfql +(exzs5c8ua q-:q ic transformation
$\left(\begin{array}{l}
x^{\prime} \\
y^{\prime}
\end{array}\right)=\left(\begin{array}{cc}
3 & a \\
3 & b-3
\end{array}\right)\left(\begin{array}{l}
x \\
y
\end{array}\right)+\left(\begin{array}{c}
b \\
a-9
\end{array}\right) .$
that maps points from (x, y) to $\left(x^{\prime}, y^{\prime}\right)$ .
It is given that the transformation maps the point (4,-4) to the point (-4,-11) .
1. Show that a=6 and b=8 .
2. Given that the transformation maps the point (p, q) to itself, find the value of p and the value of q .
A rectangle R with vertices lying on the x y -plane undergoes this transformation. p =    q =   
3. Show that the area of the image is three times the size of R .

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12#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A geometric transformation 9aybhu/vo nb7n/n) 5qT : $\left(\begin{array}{l}x \\ y\end{array}\right) \mapsto\left(\begin{array}{c}x \\ y^{\prime}\end{array}\right)$ is defined by
$\left(\begin{array}{l}
x^{\prime} \\
y^{\prime}
\end{array}\right)=\left(\begin{array}{cc}
\cos \left(\frac{\pi}{3}\right) & \sin \left(\frac{\pi}{3}\right) \\
\sin \left(\frac{\pi}{3}\right) & \cos \left(\frac{\pi}{3}\right)
\end{array}\right)\left(\begin{array}{l}
x \\
y
\end{array}\right)-\frac{\sqrt{3}}{2}\left(\begin{array}{l}
1 \\
2
\end{array}\right)$ .
1. Find the coordinates of the image of the point $P(1,-\sqrt{3})$ . $\left(-a-\frac{\sqrt{b}}{c},-\sqrt{d}\right) $ a =    b =    c =    d =   
2. Given that T : $\left(\begin{array}{l}a \\ b\end{array}\right) \mapsto \frac{1}{2}\left(\begin{array}{l}a \\ b\end{array}\right)$ , find the value of a and the value of b . a =    b =   
A rhombus R with vertices lying on the x y -plane is transformed by T .
3. Show that the area of the image is half the size of R .

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