Answer:
i dont under your question. Do you mean on triangles or complamentary or supplementary angles it depends
It is called Ecological Succesion hope that helped:)
Answer:
10
Step-by-step explanation:
one interior angle in a pentagon is 108^o.
5 interior angles are 540^o.
If we add 12+7+16+9+10, we get 54x=540^o
That means x=10
