Apply triangle sum properties ! Help!

[breekay321]

A triangle has the give vertices. Graph the triangle and classify it by its side. Then determine if it is a right angle, A(2,3), B(6,3), C(2,7)

 

[BigGlenntheHeavy]

\(\displaystyle Distance \ = \ \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)