# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 8.92   b = 7.83   c = 9.07

Area: T = 31.69991076922
Perimeter: p = 25.82
Semiperimeter: s = 12.91

Angle ∠ A = α = 63.21551534359° = 63°12'55″ = 1.10333125646 rad
Angle ∠ B = β = 51.59331214543° = 51°35'35″ = 0.99004698408 rad
Angle ∠ C = γ = 65.19217251098° = 65°11'30″ = 1.13878102482 rad

Height: ha = 7.10774232494
Height: hb = 8.09768346596
Height: hc = 6.99898804172

Median: ma = 7.20438392542
Median: mb = 8.09986681004
Median: mc = 7.06219703341

Inradius: r = 2.45553917655
Circumradius: R = 4.99660511361

Vertex coordinates: A[9.07; 0] B[0; 0] C[5.5411477398; 6.99898804172]
Centroid: CG[4.8770492466; 2.33299601391]
Coordinates of the circumscribed circle: U[4.535; 2.09662590381]
Coordinates of the inscribed circle: I[5.08; 2.45553917655]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 116.7854846564° = 116°47'5″ = 1.10333125646 rad
∠ B' = β' = 128.4076878546° = 128°24'25″ = 0.99004698408 rad
∠ C' = γ' = 114.808827489° = 114°48'30″ = 1.13878102482 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    