# 9 10 14 triangle

### Obtuse scalene triangle.

Sides: a = 9   b = 10   c = 14

Area: T = 44.84334777866
Perimeter: p = 33
Semiperimeter: s = 16.5

Angle ∠ A = α = 39.83881498056° = 39°50'17″ = 0.6955306882 rad
Angle ∠ B = β = 45.38216583472° = 45°22'54″ = 0.79220593582 rad
Angle ∠ C = γ = 94.78801918472° = 94°46'49″ = 1.65442264134 rad

Height: ha = 9.96552172859
Height: hb = 8.96986955573
Height: hc = 6.40662111124

Median: ma = 11.30326545555
Median: mb = 10.65436378763
Median: mc = 6.44220493634

Inradius: r = 2.71877865325
Circumradius: R = 7.02444328841

Vertex coordinates: A[14; 0] B[0; 0] C[6.32114285714; 6.40662111124]
Centroid: CG[6.77438095238; 2.13554037041]
Coordinates of the circumscribed circle: U[7; -0.5855369407]
Coordinates of the inscribed circle: I[6.5; 2.71877865325]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 140.1621850194° = 140°9'43″ = 0.6955306882 rad
∠ B' = β' = 134.6188341653° = 134°37'6″ = 0.79220593582 rad
∠ C' = γ' = 85.22198081528° = 85°13'11″ = 1.65442264134 rad

# How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. ### 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 ### 6. Inradius ### 7. Circumradius ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.