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Naddika [18.5K]
3 years ago
14

A parallelogram has coordinates A(1, 1), B(5, 4), C(7, 1), and D(3, -2). What are the coordinates of parallelogram A′B′C′D′ afte

r a 180° rotation about the origin and a translation 5 units to the right and 1 unit down?
Mathematics
1 answer:
Ivahew [28]3 years ago
8 0

Answer:

A'(4,-2) B'(0,-5) C'(-2,-2) D'(2,1)

Step-by-step explanation:

The given parallelogram has coordinates A(1, 1), B(5, 4), C(7, 1), and D(3, -2).

The rotation of 180\degreeabout the origin  has the mapping;

P(x,y)\rightarrow P'(-x,-y)

This implies that;


A(1,1)\rightarrow (-1,-1)


B(5,4)\rightarrow (-5,-4)


C(7,1)\rightarrow (-7,-1)


D(3,-2)\rightarrow (-3,2)


A translation of  5 units to the right and 1 unit down has the mapping;


P(x,y)\rightarrow P'(x+5,y-1)


We apply this to the resulting coordinates to obtain;

A(1,1)\rightarrow (-1,-1) \rightarrow (-1+5,-1-1)=A'(4,-2)


B(5,4)\rightarrow (-5,-1) \rightarrow (-5+5,-4-1)=B'(0,-5)


C(7,1)\rightarrow (-7,-1)\rightarrow (-7+5,-1-1)=C'(-2,-2)


D(3,-2)\rightarrow (-3,2)\rightarrow (-3+5,2-1)=D'(2,1)


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