Answer:
The value of angle 1 is 128°
Step-by-step explanation:
Angle on a straight line is 180°
Angle in a triangle is 180°
For the angle in triangle:
76° + 52° + x° = 180°
x = 180° - 128°
x = 52°
"x" is on a straight line with angle 1
Therefore,
52° + angle 1 = 180°
angle 1 = 180° - 52°
angle 1 = 128°
