Answer:
yes (right scalene triangle)
Step-by-step explanation:
a : (6 , 3)
b : (0 , 7)
c: (-8 , -5)
[lengths of sides found from Pythagorean theorem]
a = 14.422
b = 16.125
c = 7.211
[inner angles calculated using a law of cosines]
Angle ∠ A = α = 63.435°
Angle ∠ B = β = 90°
Angle ∠ C = γ = 26.565°
