# 7 23 29 triangle

### Obtuse scalene triangle.

Sides: a = 7   b = 23   c = 29

Area: T = 46.44655326162
Perimeter: p = 59
Semiperimeter: s = 29.5

Angle ∠ A = α = 8.00554308657° = 8°20″ = 0.14397211266 rad
Angle ∠ B = β = 27.23217973292° = 27°13'54″ = 0.47552845246 rad
Angle ∠ C = γ = 144.7632771805° = 144°45'46″ = 2.52765870023 rad

Height: ha = 13.2770152176
Height: hb = 4.03987419666
Height: hc = 3.20331401804

Median: ma = 25.93774246987
Median: mb = 17.68547391838
Median: mc = 8.87441196746

Inradius: r = 1.57444248344
Circumradius: R = 25.13215882121

Vertex coordinates: A[29; 0] B[0; 0] C[6.2244137931; 3.20331401804]
Centroid: CG[11.74113793103; 1.06877133935]
Coordinates of the circumscribed circle: U[14.5; -20.52767319869]
Coordinates of the inscribed circle: I[6.5; 1.57444248344]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 171.9954569134° = 171°59'40″ = 0.14397211266 rad
∠ B' = β' = 152.7688202671° = 152°46'6″ = 0.47552845246 rad
∠ C' = γ' = 35.23772281949° = 35°14'14″ = 2.52765870023 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.