Answer: 900 degrees
Step-by-step explanation:
The formula for the sum of the interior angles is (n-2)*180 where n is the number of sides.
In this case, there are 7 sides so the sum of the interior angles would be
(7-2)*180
= 5*180
= 900 degrees
-1(-1-9)= -1*-10= 10
Answer:
I'm guessing it's 70°
in the image above you can see I circled the 70°
the same angle is below it to the left. which means it's 70°
just multiple it all together