Question

verify that the sum of all interior angles of a triangle is 180 ​

Answer 1

Answer:

yes

Step-by-step explanation:

ABC is a triangle then <)ABC + <)BCA + <)CAB = 180 degrees. Draw line a through points A and B. Draw line b through point C and parallel to line a. Since lines a and b are parallel, <)BAC = <)B'CA and <)ABC = <)BCA'.

Answer 2

let us take

one side be a

one side be b

one side be c

a+b+c= 180°