Step 1 :

\

The vertices of the triangle $\"\"$ , $\"\"$ and $\"\"$ .

\

calculate the slope of the slope of DE and EF. \ \

\

Find slope of DE.

\

$\"\"$

\

$\"\"$ .

\

Slope of $\"\"$ Perpendicular slope of DE.

\

$\"\"$

\

Find equation of $\"\"$ .

\

$\"\"$

\

Find Slope of EF.

\

$\"\"$

\

Slope of $\"\"$ Perpendicular slope of EF.

\

$\"\"$

\

Find equation of DH.

\

$\"\"$

\

Subtracting equation $\"\"$ from $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

Substitute $\"\"$ in equation $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Ortho center is $\"\"$ .

\

Solution :

\

Ortho center is $\"\"$ .

\

\

\

\

\

\

\

\