Respuesta :

Hello,

According to the coding, the angle D measures 30 °. The sum of the angles of untriangle is equal to 180 °. So, the angle n measures:

n = 180° - (30° * 2) = 180° - 60° = 120°

Bye :)

we know that base angles and sides r equal
30=d
so 30+30+n=180
60+n=180
n=180-60
n=120