Question 1036397
.
You have defined the triangle. What do you need to solve?
Do you want equations for the sides, length for the sides, the angles?
(This is a right triangle , base at y=4 (length=7), leg from  (3,4) to (3,-2)
(length=6) and hypotenuse from (-4,4) to (3,-2) length={{{sqrt(85)}}}. Equation for base, y=4, equation for leg 1 x=3, equation for hypotenuse, line from (-4,4) to (3,-2), find the slope and solve. Re-post if you have an exact question.