Respuesta :

tess18
1 is 45. 120 angle is equal to 75+x
So 120-75 equals x
IcyChloe13
1. 45° because 120-75=45.

2. 50° because 180-60-70=50.

3. 50° because 180-100-30=50. The 100 is from the supplementary angle formed with the 80° angle.

4. 45° because 180-120-15=45. The 120 is from the supplementary angle formed with the 60° angle.