Answer:
See picture.
Sorry about the scrawly handwriting!
Step-by-step explanation:
You can split the figure into 2 trapezoids as shown.
The rule is +4
how did you find it you can 87-91=4
so that is your rule +4
Answer: the polygon has 20 sides.
Step-by-step explanation:
The formula for determining the sum of the measure of the interior angles in a regular polygon is expressed as (n - 2) × 180.
if the sum of the measures of the interior angles is 3960
degrees. This means that
(n - 2) × 180 = 3960
Expanding the brackets by applying the distributive property, it becomes
180n - 360 = 3960
180n = 3960 - 360
180n = 3600
Dividing both sides by 180, it becomes
n = 3600/180
n = 20
Abraham Lincoln, i've read that story a long time ago myself and I remember who said that.