Question

What is the meaure, in degrees, of the angle marked B? show work





In the following figure, the base of a triangle has been extended to the right as shown. What is the measure, in degrees, of 1? ( second picture) and show work!

Answer 1

142 and 53

Step-by-step explanation:

1) external angle of a triangle=sum of the two opposite angles

B=77+65=142

2)1+127°=180[straight angle]

1=180-127=53

Answer 2

Answer:

Step-by-step explanation:

Angle on a straight line is 180°

Therefore

Angle 1 + 127 =180°

Angle 1 = 53°