# 6 23 25 triangle

### Obtuse scalene triangle.

Sides: a = 6   b = 23   c = 25

Area: T = 67.35498329619
Perimeter: p = 54
Semiperimeter: s = 27

Angle ∠ A = α = 13.54880233388° = 13°32'53″ = 0.23664576144 rad
Angle ∠ B = β = 63.89661188627° = 63°53'46″ = 1.11551976534 rad
Angle ∠ C = γ = 102.5565857799° = 102°33'21″ = 1.79899373858 rad

Height: ha = 22.45499443206
Height: hb = 5.85765072141
Height: hc = 5.3887986637

Median: ma = 23.83327505756
Median: mb = 14.08801278403
Median: mc = 11.23661025271

Inradius: r = 2.49444382578
Circumradius: R = 12.80662678416

Vertex coordinates: A[25; 0] B[0; 0] C[2.64; 5.3887986637]
Centroid: CG[9.21333333333; 1.79659955457]
Coordinates of the circumscribed circle: U[12.5; -2.78439712699]
Coordinates of the inscribed circle: I[4; 2.49444382578]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 166.4521976661° = 166°27'7″ = 0.23664576144 rad
∠ B' = β' = 116.1043881137° = 116°6'14″ = 1.11551976534 rad
∠ C' = γ' = 77.44441422014° = 77°26'39″ = 1.79899373858 rad

# How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. ### 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.