Step-by-step explanation:
Hello there!
Just double the given sides!
(18*2)+(12*2)=60 cm.
There you are!
:)
Answer:a
Step-by-step explanation:
it became wider by decreasing two on the graph.
3420°
explanation:
the equation of the sum of interior angles are (n-2)x180
polygon above has 21 sides so you sub n as 21 and plug the equation in the calculator
Answer:
Step-by-step explanation:
Angle pair 1 and 8
and
Angle pair 2 and 7