Respuesta :
Alright man...
For question 1, angle ABC and angle CBD combines to form angle ABD. Just saying, question 2 literally answers question 1.
For question 2, it's literally addition. So 40 + 25 = 65°.
For question 3, it's just subtraction. 70 - 45 = 25°.
Good luck on ur test or whatever ur doing