Rozwiązanie:
Środek okręgu:
[tex]S=\left(\dfrac{x_1+x_5}{2},\dfrac{y_1+y_5}{2}\right)[/tex]
[tex]S=\left(\dfrac{-1+3}{2},\dfrac{3+7}{2}\right)=\left(\dfrac{2}{2},\dfrac{10}{2}\right)=\left(1,5\right)[/tex]
Promień okręgu:
[tex]r=\sqrt{(x_S-x_1)^2+(y_S-y_1)^2}[/tex]
[tex]r=\sqrt{(1-(-1))^2+(5-3)^2}=\sqrt{2^2+2^2}=\sqrt{4+4}=\sqrt{8}=\sqrt{4\cdot2}=2\sqrt{2}[/tex]
Pozostałe wierzchołki ośmiokąta foremnego:
[tex]A_2=(x_S,y_S-r)[/tex]
[tex]A_2=(1,5-2\sqrt{2})[/tex]
[tex]A_4=(x_S+r,y_S)[/tex]
[tex]A_4=(1+2\sqrt{2},5)[/tex]
[tex]A_6=(x_S,y_S+r)[/tex]
[tex]A_6=(1,5+2\sqrt{2})[/tex]
[tex]A_8=(x_S-r,y_S)[/tex]
[tex]A_8=(1-2\sqrt{2},5)[/tex]
[tex](x_S,y_S)=\left(\dfrac{x_3+x_7}{2},\dfrac{y_3+y_7}{2}\right)[/tex]
[tex](1,5)=\left(\dfrac{3+x_7}{2},\dfrac{3+y_7}{2}\right)[/tex]
[tex]1=\dfrac{3+x_7}{2},\quad5=\dfrac{3+y_7}{2}[/tex]
[tex]2=3+x_7,\quad10=3+y_7[/tex]
[tex]-1=x_7,\quad7=y_7[/tex]
[tex]A_7=(-1,7)[/tex]
Odpowiedź:
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Rozwiązanie:
Środek okręgu:
[tex]S=\left(\dfrac{x_1+x_5}{2},\dfrac{y_1+y_5}{2}\right)[/tex]
[tex]S=\left(\dfrac{-1+3}{2},\dfrac{3+7}{2}\right)=\left(\dfrac{2}{2},\dfrac{10}{2}\right)=\left(1,5\right)[/tex]
Promień okręgu:
[tex]r=\sqrt{(x_S-x_1)^2+(y_S-y_1)^2}[/tex]
[tex]r=\sqrt{(1-(-1))^2+(5-3)^2}=\sqrt{2^2+2^2}=\sqrt{4+4}=\sqrt{8}=\sqrt{4\cdot2}=2\sqrt{2}[/tex]
Pozostałe wierzchołki ośmiokąta foremnego:
[tex]A_2=(x_S,y_S-r)[/tex]
[tex]A_2=(1,5-2\sqrt{2})[/tex]
[tex]A_4=(x_S+r,y_S)[/tex]
[tex]A_4=(1+2\sqrt{2},5)[/tex]
[tex]A_6=(x_S,y_S+r)[/tex]
[tex]A_6=(1,5+2\sqrt{2})[/tex]
[tex]A_8=(x_S-r,y_S)[/tex]
[tex]A_8=(1-2\sqrt{2},5)[/tex]
[tex](x_S,y_S)=\left(\dfrac{x_3+x_7}{2},\dfrac{y_3+y_7}{2}\right)[/tex]
[tex](1,5)=\left(\dfrac{3+x_7}{2},\dfrac{3+y_7}{2}\right)[/tex]
[tex]1=\dfrac{3+x_7}{2},\quad5=\dfrac{3+y_7}{2}[/tex]
[tex]2=3+x_7,\quad10=3+y_7[/tex]
[tex]-1=x_7,\quad7=y_7[/tex]
[tex]A_7=(-1,7)[/tex]
Odpowiedź:
[tex]A_2=(1,5-2\sqrt{2})[/tex]
[tex]A_4=(1+2\sqrt{2},5)[/tex]
[tex]A_6=(1,5+2\sqrt{2})[/tex]
[tex]A_7=(-1,7)[/tex]
[tex]A_8=(1-2\sqrt{2},5)[/tex]