Question

please answer this question quickly. ​

Answer 1

Answer:

in triangle ABC

angle a+angle b+angle c=180(angle sum property)

in triangle def

angle e+angle d+angle f= 180(angle sum property)

by adding both

angle (a+b+c+d+e+f)=180+180=360

Answer 2

Answer:

360

Step-by-step explanation:

because in ∆ABC

sum of angles A B C is equal to 180°

also in another ∆ DEF

sum of angles D E F is equal to 180°

thus sum of all angles must be 360°