Answer:
angle b = 60°, angle c = 50°
Step-by-step explanation:
angle b: 120° - 80° = 60°
this is because a straight line is 180*, therefore given the angle 120° we can work out the other by subtracting it from 180°
angle c: 60° + 70° = 130°, 180° - 130° = 50°
this is because angles in a triangle add up to 180°, therefore given two angles we can subtract them from 180° to get the third
hope this helps! :)
