N
nguyenkhanhchi
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Cho [TEX]\Delta ABC[/TEX] độ dài có sẵn. Hãy vẽ các độ dài sau:
a, [TEX]x=\sqrt{b^2+c^2-a^2}[/TEX]
b, [TEX]x=\sqrt{3a^2+3b^2-c^2}[/TEX]
c, [TEX]x=\sqrt{ab+c^2}[/TEX]
a, [TEX]x=\sqrt{b^2+c^2-a^2}[/TEX]
b, [TEX]x=\sqrt{3a^2+3b^2-c^2}[/TEX]
c, [TEX]x=\sqrt{ab+c^2}[/TEX]