# 1 17 17 triangle

### Acute isosceles triangle.

Sides: a = 1   b = 17   c = 17

Area: T = 8.4966322734
Perimeter: p = 35
Semiperimeter: s = 17.5

Angle ∠ A = α = 3.37108260805° = 3°22'15″ = 0.05988320136 rad
Angle ∠ B = β = 88.31545869598° = 88°18'53″ = 1.541138032 rad
Angle ∠ C = γ = 88.31545869598° = 88°18'53″ = 1.541138032 rad

Height: ha = 16.9932645468
Height: hb = 10.9995673805
Height: hc = 10.9995673805

Median: ma = 16.9932645468
Median: mb = 8.52993610546
Median: mc = 8.52993610546

Inradius: r = 0.48655041562
Circumradius: R = 8.50436788576

Vertex coordinates: A[17; 0] B[0; 0] C[0.02994117647; 10.9995673805]
Centroid: CG[5.67664705882; 0.33331891268]
Coordinates of the circumscribed circle: U[8.5; 0.25501082017]
Coordinates of the inscribed circle: I[0.5; 0.48655041562]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 176.629917392° = 176°37'45″ = 0.05988320136 rad
∠ B' = β' = 91.68554130402° = 91°41'7″ = 1.541138032 rad
∠ C' = γ' = 91.68554130402° = 91°41'7″ = 1.541138032 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.