# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 7   b = 18   c = 19

Area: T = 62.92985308902
Perimeter: p = 44
Semiperimeter: s = 22

Angle ∠ A = α = 21.59325161782° = 21°35'33″ = 0.37768605011 rad
Angle ∠ B = β = 71.13768864586° = 71°8'13″ = 1.24215728883 rad
Angle ∠ C = γ = 87.27105973632° = 87°16'14″ = 1.52331592642 rad

Height: ha = 17.98795802543
Height: hb = 6.99220589878
Height: hc = 6.62440558832

Median: ma = 18.17327818454
Median: mb = 11.13655287257
Median: mc = 9.81107084352

Inradius: r = 2.86603877677
Circumradius: R = 9.51107893277

Vertex coordinates: A[19; 0] B[0; 0] C[2.26331578947; 6.62440558832]
Centroid: CG[7.08877192982; 2.20880186277]
Coordinates of the circumscribed circle: U[9.5; 0.45328947299]
Coordinates of the inscribed circle: I[4; 2.86603877677]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 158.4077483822° = 158°24'27″ = 0.37768605011 rad
∠ B' = β' = 108.8633113541° = 108°51'47″ = 1.24215728883 rad
∠ C' = γ' = 92.72994026368° = 92°43'46″ = 1.52331592642 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.