Answer:
so this is my answer 1-4(A) only number 5 is not finished! (a only)
a.
1.)1080°
sum of interior angle=
(n-2) (180°)
1080° =(n-2) (180)
n-2=6
n= 8 sides
2.)1260°
sum of the interior angle=
(n-2) (180) = 1200
=n-2 = 1260° ÷ 180°
=n-2 = 7
=n = 2 + 7
n = 9sides
3.)1620°
sum of the interior angle
=180°(n-2) = 1620°
=180°n -360 = 1620°
=180° =1980
= 11 sides
4.)1980°
sum of interior angles
=(n-2) • 180° = 1980°
=(n-2) • 180° = 1980°
—————— ———
180° 80
n-2 = 11
n = 13 sides
(〃ﾟ3ﾟ〃)
Step-by-step explanation:
i hope it helps tenchuu
