# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 6   b = 7   c = 9

Area: T = 20.97661769634
Perimeter: p = 22
Semiperimeter: s = 11

Angle ∠ A = α = 41.7522205202° = 41°45'8″ = 0.72987134507 rad
Angle ∠ B = β = 50.97771974348° = 50°58'38″ = 0.89897199387 rad
Angle ∠ C = γ = 87.27105973632° = 87°16'14″ = 1.52331592642 rad

Height: ha = 6.99220589878
Height: hb = 5.99331934181
Height: hc = 4.66113726585

Median: ma = 7.48333147735
Median: mb = 6.80107352544
Median: mc = 4.7176990566

Inradius: r = 1.90769251785
Circumradius: R = 4.50551107342

Vertex coordinates: A[9; 0] B[0; 0] C[3.77877777778; 4.66113726585]
Centroid: CG[4.25992592593; 1.55437908862]
Coordinates of the circumscribed circle: U[4.5; 0.21545290826]
Coordinates of the inscribed circle: I[4; 1.90769251785]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 138.2487794798° = 138°14'52″ = 0.72987134507 rad
∠ B' = β' = 129.0232802565° = 129°1'22″ = 0.89897199387 rad
∠ C' = γ' = 92.72994026368° = 92°43'46″ = 1.52331592642 rad

# How did we calculate this triangle? ### 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.