#1 Acute scalene triangle.

Sides: a = 50   b = 40   c = 40.95986686284

Area: T = 795.772159778
Perimeter: p = 130.9598668628
Semiperimeter: s = 65.47993343142

Angle ∠ A = α = 76.2721804145° = 76°16'18″ = 1.33111941088 rad
Angle ∠ B = β = 51° = 0.89901179185 rad
Angle ∠ C = γ = 52.7288195855° = 52°43'42″ = 0.92202806263 rad

Height: h_a = 31.83108639112
Height: h_b = 39.7898579889
Height: h_c = 38.85772980728

Median: m_a = 31.84403245571
Median: m_b = 41.09550881238
Median: m_c = 40.38106496487

Inradius: r = 12.15330190573
Circumradius: R = 25.73551913179

Vertex coordinates: A[40.95986686284; 0] B[0; 0] C[31.46660195525; 38.85772980728]
Centroid: CG[24.1421562727; 12.95224326909]
Coordinates of the circumscribed circle: U[20.47993343142; 15.58551512092]
Coordinates of the inscribed circle: I[25.47993343142; 12.15330190573]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 103.7288195855° = 103°43'42″ = 1.33111941088 rad
∠ B' = β' = 129° = 0.89901179185 rad
∠ C' = γ' = 127.2721804145° = 127°16'18″ = 0.92202806263 rad