# 2 29 30 triangle

### Obtuse scalene triangle.

Sides: a = 2   b = 29   c = 30

Area: T = 25.53330667958
Perimeter: p = 61
Semiperimeter: s = 30.5

Angle ∠ A = α = 3.36550076185° = 3°21'54″ = 0.05987304623 rad
Angle ∠ B = β = 58.33217567465° = 58°19'54″ = 1.01880812137 rad
Angle ∠ C = γ = 118.3033235635° = 118°18'12″ = 2.06547809776 rad

Height: ha = 25.53330667958
Height: hb = 1.76109011583
Height: hc = 1.70222044531

Median: ma = 29.48772853956
Median: mb = 15.54883118055
Median: mc = 14.05334693226

Inradius: r = 0.8377149731
Circumradius: R = 17.03767313679

Vertex coordinates: A[30; 0] B[0; 0] C[1.05; 1.70222044531]
Centroid: CG[10.35; 0.56774014844]
Coordinates of the circumscribed circle: U[15; -8.07877605624]
Coordinates of the inscribed circle: I[1.5; 0.8377149731]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 176.6354992381° = 176°38'6″ = 0.05987304623 rad
∠ B' = β' = 121.6688243254° = 121°40'6″ = 1.01880812137 rad
∠ C' = γ' = 61.6976764365° = 61°41'48″ = 2.06547809776 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.