# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 16.55   b = 19.03   c = 7.21

Area: T = 58.97702920612
Perimeter: p = 42.79
Semiperimeter: s = 21.395

Angle ∠ A = α = 59.27701058288° = 59°16'12″ = 1.03444584947 rad
Angle ∠ B = β = 98.73878308876° = 98°44'16″ = 1.72333002453 rad
Angle ∠ C = γ = 21.99220632836° = 21°59'31″ = 0.38438339136 rad

Height: ha = 7.12663192823
Height: hb = 6.19876134589
Height: hc = 16.3587917354

Median: ma = 11.77222926824
Median: mb = 8.50992934489
Median: mc = 17.46549842542

Inradius: r = 2.75662651115
Circumradius: R = 9.6276729772

Vertex coordinates: A[7.21; 0] B[0; 0] C[-2.51441678225; 16.3587917354]
Centroid: CG[1.56552773925; 5.4532639118]
Coordinates of the circumscribed circle: U[3.605; 8.92662478737]
Coordinates of the inscribed circle: I[2.365; 2.75662651115]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120.7329894171° = 120°43'48″ = 1.03444584947 rad
∠ B' = β' = 81.26221691124° = 81°15'44″ = 1.72333002453 rad
∠ C' = γ' = 158.0087936716° = 158°29″ = 0.38438339136 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.