I need help with this

9,15,19 is a triangle

Obtuse Scalene Triangle

Side a = 15
Side b = 9
Side c = 19
Angle ∠A = 50.617° = 50°37'1" = 0.88343 rad
Angle ∠B = 27.63° = 27°37'46" = 0.48223 rad
Angle ∠C = 101.754° = 101°45'13" = 1.77594 rad

Area = 66.0847
Perimeter p = 43
Semiperimeter s = 21.5

Height ha = 8.81129
Height hb = 14.68549
Height hc = 6.95628

Median ma = 12.8355
Median mb = 16.51514
Median mc = 7.92149

Inradius r = 3.07371
Circumradius R = 9.70346

Vertex coordinates: A[0, 0] B[19, 0] C[5.71053, 6.95628]
Centroid: [8.23684, 2.31876]
Inscribed Circle Center: [6.5, 3.07371]
Circumscribed Circle Center: [9.5, 1.97663]

14,16,4 is a triangle

Obtuse Scalene Triangle

Side a = 16
Side b = 14
Side c = 4
Angle ∠A = 113.132° = 113°7'57" = 1.97453 rad
Angle ∠B = 53.576° = 53°34'35" = 0.93509 rad
Angle ∠C = 13.291° = 13°17'28" = 0.23197 rad

Area = 25.74879
Perimeter p = 34
Semiperimeter s = 17

Height ha = 3.2186
Height hb = 3.6784
Height hc = 12.87439

Median ma = 6.48074
Median mb = 9.32738
Median mc = 14.89966

Inradius r = 1.51463
Circumradius R = 8.69944

Vertex coordinates: A[0, 0] B[4, 0] C[-5.5, 12.87439]
Centroid: [0.5, 4.29146]
Inscribed Circle Center: [1, 1.51463]
Circumscribed Circle Center: [2, 8.46642]

6,22,6 is not a triangle

The sum of two sides must be larger than the third

9.1,2.5,12.3 is not a triangle

The sum of two sides must be larger than the third