Answer:
Your answer is 3/25
Step-by-step explanation:
Could I see a picture of what kind of triangle it is please?
Couldn’t quite read everything, the writing is very light. But from what I could read, it was correct for the most part. :)
Step-by-step explanation:
(n-2)×180=3420
180n-360=3420
180n=3420+360
180n=3780
n=3780/180
n=21
that is, the number of sides is 21
to get the size of each exterior angle=
360/21
=17.14°