151°
Answer:
Question
42. Write an addition sentence about the angle measures. Use an unknown (x) for one angle measure. Then solve it.
Solution given;
∡BAC=29°
∡CAD=x
we have
∡BAC+∡CAD=180°[ sum of angle of linear pair is 180°]
29°=x=180°
x=180°-29°=151°
Explanation: