# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 1   b = 3   c = 3

Area: T = 1.47990199458
Perimeter: p = 7
Semiperimeter: s = 3.5

Angle ∠ A = α = 19.18881364537° = 19°11'17″ = 0.33548961584 rad
Angle ∠ B = β = 80.40659317731° = 80°24'21″ = 1.40333482476 rad
Angle ∠ C = γ = 80.40659317731° = 80°24'21″ = 1.40333482476 rad

Height: ha = 2.95880398915
Height: hb = 0.98660132972
Height: hc = 0.98660132972

Median: ma = 2.95880398915
Median: mb = 1.65883123952
Median: mc = 1.65883123952

Inradius: r = 0.42325771274
Circumradius: R = 1.52112776585

Vertex coordinates: A[3; 0] B[0; 0] C[0.16766666667; 0.98660132972]
Centroid: CG[1.05655555556; 0.32986710991]
Coordinates of the circumscribed circle: U[1.5; 0.25435462764]
Coordinates of the inscribed circle: I[0.5; 0.42325771274]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 160.8121863546° = 160°48'43″ = 0.33548961584 rad
∠ B' = β' = 99.59440682269° = 99°35'39″ = 1.40333482476 rad
∠ C' = γ' = 99.59440682269° = 99°35'39″ = 1.40333482476 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.