Question

the sum of four angles of a concave quadrilateral is​

Answer 1

Answer:

1. the sum of four angles of a concave quadrilateral is
2. = (n-2×180)(n is no of sides)
3. (4-2×180)=
4. 2×180=360°

Answer 2

Answer:

360°

Step-by-step explanation:

Hope it's correct thank you ♥