Respuesta :

linandrew41

The sum of all the angles is 180, so we get the equation

x + 2x + 90 = 180

3x = 90

x = 30

Hope that helps!

Jaswant22
Right angle so ..
2x + x + 90=180
3x+90=180
3x=180-90=90 now…
X=90/3
X=30 degree hope you understand.