Question

2] In AABC, LA + LB = 140°, then 4C =
a) 140°
b) 70°
c) 40°
d) 80°​

Answer 1

Answer:

40°

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Answer 2

Step-by-step explanation:

In ∆ABC,

LA+LB+LC=180------(sum of all angle in triangle is 180°)

therefore, 140+LC=180---(LA+LB=140)---(GIVEN)

therefore, LC=180-140

therefore, LC=40°

answer:C)40°