Question

If one angle is 20 degree second is of 40 degree then what will be the third?.... pls help me fast then I ll mark u as brainliest ​

Answer 1

Answer:

then 3rd angle is 120°

in triangle

Answer 2

Answer:

it is 120 degree

Step-by-step explanation:

if all three anglea lie in a straight line then

20+40+third angle =180

third angle=180-60

third angle =120

here ia your answer please mark me brainlist