# 14 17 30 triangle

### Obtuse scalene triangle.

Sides: a = 14   b = 17   c = 30

Area: T = 58.28332523114
Perimeter: p = 61
Semiperimeter: s = 30.5

Angle ∠ A = α = 13.2122412139° = 13°12'45″ = 0.2310600094 rad
Angle ∠ B = β = 16.11333969958° = 16°6'48″ = 0.28112318313 rad
Angle ∠ C = γ = 150.6744190865° = 150°40'27″ = 2.63297607284 rad

Height: ha = 8.32661789016
Height: hb = 6.85768532131
Height: hc = 3.88655501541

Median: ma = 23.35659414283
Median: mb = 21.81216941112
Median: mc = 4.18333001327

Inradius: r = 1.91109263053
Circumradius: R = 30.62662936471

Vertex coordinates: A[30; 0] B[0; 0] C[13.45; 3.88655501541]
Centroid: CG[14.48333333333; 1.29551833847]
Coordinates of the circumscribed circle: U[15; -26.70114955117]
Coordinates of the inscribed circle: I[13.5; 1.91109263053]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 166.7887587861° = 166°47'15″ = 0.2310600094 rad
∠ B' = β' = 163.8876603004° = 163°53'12″ = 0.28112318313 rad
∠ C' = γ' = 29.32658091348° = 29°19'33″ = 2.63297607284 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.