# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 22   b = 24   c = 26

Area: T = 245.9276818383
Perimeter: p = 72
Semiperimeter: s = 36

Angle ∠ A = α = 52.02201275551° = 52°1'12″ = 0.90879225031 rad
Angle ∠ B = β = 59.30435587083° = 59°18'13″ = 1.03550423576 rad
Angle ∠ C = γ = 68.67663137365° = 68°40'35″ = 1.19986277928 rad

Height: ha = 22.35769834894
Height: hb = 20.49439015319
Height: hc = 18.91774475679

Median: ma = 22.47222050542
Median: mb = 20.88106130178
Median: mc = 19

Inradius: r = 6.83113005106
Circumradius: R = 13.95553710432

Vertex coordinates: A[26; 0] B[0; 0] C[11.23107692308; 18.91774475679]
Centroid: CG[12.41102564103; 6.3065815856]
Coordinates of the circumscribed circle: U[13; 5.07546803793]
Coordinates of the inscribed circle: I[12; 6.83113005106]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 127.9879872445° = 127°58'48″ = 0.90879225031 rad
∠ B' = β' = 120.6966441292° = 120°41'47″ = 1.03550423576 rad
∠ C' = γ' = 111.3243686263° = 111°19'25″ = 1.19986277928 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    