# Isosceles triangle calculator (b,h)

Please enter two properties of the isosceles triangle

Use symbols: a, b, h, T, p, A, B, C, r, R

You have entered side b and height hc.

### Obtuse isosceles triangle.

Sides: a = 246.2211445045   b = 246.2211445045   c = 450

Area: T = 22500
Perimeter: p = 942.443289009
Semiperimeter: s = 471.2211445045

Angle ∠ A = α = 23.96224889746° = 23°57'45″ = 0.41882243296 rad
Angle ∠ B = β = 23.96224889746° = 23°57'45″ = 0.41882243296 rad
Angle ∠ C = γ = 132.0755022051° = 132°4'30″ = 2.30551439944 rad

Height: ha = 182.7622309724
Height: hb = 182.7622309724
Height: hc = 100

Median: ma = 341.1843601599
Median: mb = 341.1843601599
Median: mc = 100

Inradius: r = 47.7488251351
Circumradius: R = 303.125

Vertex coordinates: A[450; 0] B[0; 0] C[225; 100]
Centroid: CG[225; 33.33333333333]
Coordinates of the circumscribed circle: U[225; -203.125]
Coordinates of the inscribed circle: I[225; 47.7488251351]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 156.0387511025° = 156°2'15″ = 0.41882243296 rad
∠ B' = β' = 156.0387511025° = 156°2'15″ = 0.41882243296 rad
∠ C' = γ' = 47.92549779492° = 47°55'30″ = 2.30551439944 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.