# 200 200 153.07 triangle

### Acute isosceles triangle.

Sides: a = 200   b = 200   c = 153.07

Area: T = 14141.87774677
Perimeter: p = 553.07
Semiperimeter: s = 276.535

Angle ∠ A = α = 67.50105229448° = 67°30'2″ = 1.17881063722 rad
Angle ∠ B = β = 67.50105229448° = 67°30'2″ = 1.17881063722 rad
Angle ∠ C = γ = 44.99989541104° = 44°59'56″ = 0.78553799092 rad

Height: ha = 141.4198774678
Height: hb = 141.4198774678
Height: hc = 184.7776605053

Median: ma = 147.3610824
Median: mb = 147.3610824
Median: mc = 184.7776605053

Inradius: r = 51.14395572631
Circumradius: R = 108.2398810829

Vertex coordinates: A[153.07; 0] B[0; 0] C[76.535; 184.7776605053]
Centroid: CG[76.535; 61.59222016844]
Coordinates of the circumscribed circle: U[76.535; 76.53877942241]
Coordinates of the inscribed circle: I[76.535; 51.14395572631]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 112.4999477055° = 112°29'58″ = 1.17881063722 rad
∠ B' = β' = 112.4999477055° = 112°29'58″ = 1.17881063722 rad
∠ C' = γ' = 135.001104589° = 135°4″ = 0.78553799092 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.