What are the angles of a triangle with the sides 10, 8, 7

Angle ∠ A = α = 44.049° = 44°2'55″ = 0.769 rad
Angle ∠ B = β = 52.617° = 52°37' = 0.918 rad
Angle ∠ C = γ = 83.335° = 83°20'4″ = 1.454 rad

10> trapezoid
7>homagrama
8>square

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm