Question

pls tell I will give branliest​

Answer 1

Answer:

x = 100°

Step-by-step explanation:

Let the 140° angle = ∠ROT  

∠ROT + ∠RTO + ∠TRO = 180°

140° + b + a = 180°

a + b = 40°

∠RST + ∠SRT + ∠STR = 180°

x + a + a + b + b = 180°

x + 2 (a + b) = 180°

x + 2(40)° = 180°

x + 80° = 180°

x = 180 - 80

x = 100°