Detailed description

Two triangles side by side. Triangle ABC with labelling AC = b, CB = a, BC = c, ∠ACB = γ, ∠CBA = β, ∠BAC = α.

Triangle A'B'C' with labelling A'C' = kb, C'B' = ka, B'C' = kc, ∠A'C'B' = γ, ∠C'B'A' = β, ∠B'A'C' = α.