# 16 16 29 triangle

### Obtuse isosceles triangle.

Sides: a = 16   b = 16   c = 29

Area: T = 98.07661821239
Perimeter: p = 61
Semiperimeter: s = 30.5

Angle ∠ A = α = 25.00878332347° = 25°28″ = 0.43664690287 rad
Angle ∠ B = β = 25.00878332347° = 25°28″ = 0.43664690287 rad
Angle ∠ C = γ = 129.9844333531° = 129°59'4″ = 2.26986545961 rad

Height: ha = 12.26595227655
Height: hb = 12.26595227655
Height: hc = 6.76438746292

Median: ma = 22.01113607031
Median: mb = 22.01113607031
Median: mc = 6.76438746292

Inradius: r = 3.21656125287
Circumradius: R = 18.92440645364

Vertex coordinates: A[29; 0] B[0; 0] C[14.5; 6.76438746292]
Centroid: CG[14.5; 2.25546248764]
Coordinates of the circumscribed circle: U[14.5; -12.16601899072]
Coordinates of the inscribed circle: I[14.5; 3.21656125287]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 154.9922166765° = 154°59'32″ = 0.43664690287 rad
∠ B' = β' = 154.9922166765° = 154°59'32″ = 0.43664690287 rad
∠ C' = γ' = 50.01656664694° = 50°56″ = 2.26986545961 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.