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

They sought new allies to germany tried to get mexico to join and put pressure on the us. the us joined the allies because of the lucitania