$\"\"$

The vertices are $\"\"$ , $\"\"$ and $\"\"$ .

Distance between the vertices $\"\"$ and $\"\"$ is $\"\"$ .

Distance between $\"\"$ and $\"\"$ is $\"\"$ :

$\"\"$

Distance between $\"\"$ and $\"\"$ is $\"\"$ :

$\"\"$

Distance between $\"\"$ and $\"\"$ is $\"\"$ :

$\"\"$

Since $\"\"$ , the vertices are correspond to the isosceles triangle.

$\"\"$

The vertices are correspond to the isosceles triangle.