Triangle calculator
Right scalene triangle.
Sides: a = 1.04443258315 b = 0.8 c = 0.67112797049Area: T = 0.2698511882
Perimeter: p = 2.51656055364
Semiperimeter: s = 1.25878027682
Angle ∠ A = α = 90° = 1.57107963268 rad
Angle ∠ B = β = 50° = 0.8732664626 rad
Angle ∠ C = γ = 40° = 0.69881317008 rad
Height: ha = 0.51442300877
Height: hb = 0.67112797049
Height: hc = 0.8
Median: ma = 0.52221629157
Median: mb = 0.78114195047
Median: mc = 0.8687556402
Inradius: r = 0.21334769367
Circumradius: R = 0.52221629157
Vertex coordinates: A[0.67112797049; 0] B[0; 0] C[0.67112797049; 0.8]
Centroid: CG[0.44875198033; 0.26766666667]
Coordinates of the circumscribed circle: U[0.33656398525; 0.4]
Coordinates of the inscribed circle: I[0.45878027682; 0.21334769367]
Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 90° = 1.57107963268 rad
∠ B' = β' = 130° = 0.8732664626 rad
∠ C' = γ' = 140° = 0.69881317008 rad
Calculate another triangle
How did we calculate this triangle?
1. Input data entered: side b, angle α and angle β.

2. From angle α and angle β we calculate γ:

3. From angle α, angle β and side b we calculate a - By using the law of sines, we calculate unknown side a:

4. Calculation of the third side c of the triangle using a Law of Cosines

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.

5. The triangle circumference is the sum of the lengths of its three sides

6. Semiperimeter of the triangle

7. The triangle area using Heron's formula

8. Calculate the heights of the triangle from its area.

9. Calculation of the inner angles of the triangle using a Law of Cosines

10. Inradius

11. Circumradius
