20 20 28 triangle

Acute isosceles triangle.

Sides: a = 20   b = 20   c = 28

Area: T = 199.9659995999
Perimeter: p = 68
Semiperimeter: s = 34

Angle ∠ A = α = 45.57329959992° = 45°34'23″ = 0.79553988302 rad
Angle ∠ B = β = 45.57329959992° = 45°34'23″ = 0.79553988302 rad
Angle ∠ C = γ = 88.85440080016° = 88°51'14″ = 1.55107949932 rad

Height: ha = 19.99659995999
Height: hb = 19.99659995999
Height: hc = 14.28328568571

Median: ma = 22.18110730128
Median: mb = 22.18110730128
Median: mc = 14.28328568571

Inradius: r = 5.88111763529
Circumradius: R = 14.00328008403

Vertex coordinates: A[28; 0] B[0; 0] C[14; 14.28328568571]
Centroid: CG[14; 4.76109522857]
Coordinates of the circumscribed circle: U[14; 0.28800560168]
Coordinates of the inscribed circle: I[14; 5.88111763529]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 134.4277004001° = 134°25'37″ = 0.79553988302 rad
∠ B' = β' = 134.4277004001° = 134°25'37″ = 0.79553988302 rad
∠ C' = γ' = 91.14659919984° = 91°8'46″ = 1.55107949932 rad

Calculate another triangle




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.


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