# 15 19 29 triangle

### Obtuse scalene triangle.

Sides: a = 15   b = 19   c = 29

Area: T = 127.445484101
Perimeter: p = 63
Semiperimeter: s = 31.5

Angle ∠ A = α = 27.55546661768° = 27°33'17″ = 0.48109196491 rad
Angle ∠ B = β = 35.87703643042° = 35°52'13″ = 0.6266055961 rad
Angle ∠ C = γ = 116.5754969519° = 116°34'30″ = 2.03546170435 rad

Height: ha = 16.9932645468
Height: hb = 13.41552464221
Height: hc = 8.789929938

Median: ma = 23.3439880034
Median: mb = 21.04216254125
Median: mc = 9.09767026993

Inradius: r = 4.04658679686
Circumradius: R = 16.21328963686

Vertex coordinates: A[29; 0] B[0; 0] C[12.15551724138; 8.789929938]
Centroid: CG[13.71883908046; 2.932976646]
Coordinates of the circumscribed circle: U[14.5; -7.25331378491]
Coordinates of the inscribed circle: I[12.5; 4.04658679686]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 152.4455333823° = 152°26'43″ = 0.48109196491 rad
∠ B' = β' = 144.1329635696° = 144°7'47″ = 0.6266055961 rad
∠ C' = γ' = 63.4255030481° = 63°25'30″ = 2.03546170435 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.