Step-by-step explanation:
Let the angle near point A be .
Let the angle near point B be .
Let the angle near point C be .
Let the external angle near point A be .
Let the external angle near point B be .
Let the external angle near point C be .
According to exterior angle property,exterior angle of an angle is the sum of other two angles.
So,
According to angle sum property,the sum of angles in the triangle add to
Answer:
The vertex is the point (-6,-34)
Step-by-step explanation:
we know that
The equation of a vertical parabola into vertex form is equal to
where
(h,k) is the vertex of the parabola
In this problem we have
Convert in vertex form
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square . Remember to balance the equation by adding the same constants to each side.
Rewrite as perfect squares
The vertex is the point (-6,-34)
