# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 18   b = 18   c = 24

Area: T = 160.997689438
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 48.19896851042° = 48°11'23″ = 0.84110686706 rad
Angle ∠ B = β = 48.19896851042° = 48°11'23″ = 0.84110686706 rad
Angle ∠ C = γ = 83.62106297916° = 83°37'14″ = 1.45994553125 rad

Height: ha = 17.889854382
Height: hb = 17.889854382
Height: hc = 13.4166407865

Median: ma = 19.20993727123
Median: mb = 19.20993727123
Median: mc = 13.4166407865

Inradius: r = 5.3676563146
Circumradius: R = 12.07547670785

Vertex coordinates: A[24; 0] B[0; 0] C[12; 13.4166407865]
Centroid: CG[12; 4.4722135955]
Coordinates of the circumscribed circle: U[12; 1.34216407865]
Coordinates of the inscribed circle: I[12; 5.3676563146]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 131.8110314896° = 131°48'37″ = 0.84110686706 rad
∠ B' = β' = 131.8110314896° = 131°48'37″ = 0.84110686706 rad
∠ C' = γ' = 96.37993702084° = 96°22'46″ = 1.45994553125 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.