# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 5   b = 8   c = 9

Area: T = 19.98997487421
Perimeter: p = 22
Semiperimeter: s = 11

Angle ∠ A = α = 33.55773097619° = 33°33'26″ = 0.58656855435 rad
Angle ∠ B = β = 62.18218607153° = 62°10'55″ = 1.08552782045 rad
Angle ∠ C = γ = 84.26108295227° = 84°15'39″ = 1.47106289056 rad

Height: ha = 7.96598994969
Height: hb = 4.97549371855
Height: hc = 4.42221663871

Median: ma = 8.1399410298
Median: mb = 6.08327625303
Median: mc = 4.92444289009

Inradius: r = 1.80990680675
Circumradius: R = 4.52326701687

Vertex coordinates: A[9; 0] B[0; 0] C[2.33333333333; 4.42221663871]
Centroid: CG[3.77877777778; 1.47440554624]
Coordinates of the circumscribed circle: U[4.5; 0.45222670169]
Coordinates of the inscribed circle: I[3; 1.80990680675]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 146.4432690238° = 146°26'34″ = 0.58656855435 rad
∠ B' = β' = 117.8188139285° = 117°49'5″ = 1.08552782045 rad
∠ C' = γ' = 95.73991704773° = 95°44'21″ = 1.47106289056 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 ### 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.