9.49 3.61 12.04 triangle

Obtuse scalene triangle.

Sides: a = 9.49   b = 3.61   c = 12.04

Area: T = 13.55992271638
Perimeter: p = 25.14
Semiperimeter: s = 12.57

Angle ∠ A = α = 38.60332082282° = 38°36'12″ = 0.67437530854 rad
Angle ∠ B = β = 13.73296397558° = 13°43'47″ = 0.24396274189 rad
Angle ∠ C = γ = 127.6677152016° = 127°40'2″ = 2.22882121493 rad

Height: ha = 2.85875821209
Height: hb = 7.51220372099
Height: hc = 2.25223633162

Median: ma = 7.51554391089
Median: mb = 10.68989113103
Median: mc = 3.9122249992

Inradius: r = 1.07986974673
Circumradius: R = 7.60551007741

Vertex coordinates: A[12.04; 0] B[0; 0] C[9.21988372093; 2.25223633162]
Centroid: CG[7.08662790698; 0.75107877721]
Coordinates of the circumscribed circle: U[6.02; -4.64772742317]
Coordinates of the inscribed circle: I[8.96; 1.07986974673]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 141.3976791772° = 141°23'48″ = 0.67437530854 rad
∠ B' = β' = 166.2770360244° = 166°16'13″ = 0.24396274189 rad
∠ C' = γ' = 52.3332847984° = 52°19'58″ = 2.22882121493 rad

How did we calculate this triangle?

1. The triangle circumference is the sum of the lengths of its three sides 2. Semiperimeter of the triangle 3. The triangle area using Heron's formula 4. Calculate the heights of the triangle from its area. 5. Calculation of the inner angles of the triangle using a Law of Cosines     