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natta225 [31]
3 years ago
10

Help me with Geometry

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
5 0
\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%  (a,b)
P&({{ 3}}\quad ,&{{ 5}})\quad 
%  (c,d)
Q&({{ c}}\quad ,&{{ d}})
\end{array}\quad
%   coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)=(-2,0)\\\\
-----------------------------\\\\
\left(\cfrac{{{ c}} + {{ 3}}}{2}\quad ,\quad \cfrac{{{ d}} + {{ 5}}}{2} \right)=(-2,0)M\implies 
\begin{cases}
\cfrac{c+3}{2}=-2\\\\
\cfrac{d+5}{2}=0
\end{cases}

if you solve those equations for "c" and "d" respectively, you'd get, well the Q point of c,d
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