# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 200   b = 180   c = 322.87

Area: T = 16143.67883774
Perimeter: p = 702.87
Semiperimeter: s = 351.435

Angle ∠ A = α = 33.74994115973° = 33°44'58″ = 0.5899038353 rad
Angle ∠ B = β = 300.0003655147° = 30°1″ = 0.5243605155 rad
Angle ∠ C = γ = 116.2550222888° = 116°15'1″ = 2.02989491456 rad

Height: ha = 161.4376783774
Height: hb = 179.3744204193
Height: hc = 100.0011104949

Median: ma = 241.5010555797
Median: mb = 253.0276714894
Median: mc = 100.6911314298

Inradius: r = 45.93664558948
Circumradius: R = 179.9988011114

Vertex coordinates: A[322.87; 0] B[0; 0] C[173.204444281; 100.0011104949]
Centroid: CG[165.3588147603; 33.33437016495]
Coordinates of the circumscribed circle: U[161.435; -79.61217125815]
Coordinates of the inscribed circle: I[171.435; 45.93664558948]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 146.2510588403° = 146°15'2″ = 0.5899038353 rad
∠ B' = β' = 1509.999634485° = 149°59'59″ = 0.5243605155 rad
∠ C' = γ' = 63.7549777112° = 63°44'59″ = 2.02989491456 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    