# 16 23 25 triangle

### Acute scalene triangle.

Sides: a = 16   b = 23   c = 25

Area: T = 179.6599554565
Perimeter: p = 64
Semiperimeter: s = 32

Angle ∠ A = α = 38.66597389359° = 38°39'35″ = 0.67547397324 rad
Angle ∠ B = β = 63.89661188627° = 63°53'46″ = 1.11551976534 rad
Angle ∠ C = γ = 77.44441422014° = 77°26'39″ = 1.35216552678 rad

Height: ha = 22.45499443206
Height: hb = 15.61773525709
Height: hc = 14.36879643652

Median: ma = 22.65495033058
Median: mb = 17.55770498661
Median: mc = 15.37704261489

Inradius: r = 5.61224860802
Circumradius: R = 12.80662678416

Vertex coordinates: A[25; 0] B[0; 0] C[7.04; 14.36879643652]
Centroid: CG[10.68; 4.78993214551]
Coordinates of the circumscribed circle: U[12.5; 2.78439712699]
Coordinates of the inscribed circle: I[9; 5.61224860802]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 141.3440261064° = 141°20'25″ = 0.67547397324 rad
∠ B' = β' = 116.1043881137° = 116°6'14″ = 1.11551976534 rad
∠ C' = γ' = 102.5565857799° = 102°33'21″ = 1.35216552678 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.