A NONA=9, nonagon has 9 sides, so it's perimeter is 7+7+7+7+7+7+7+7+7, or 63, and we know the apothem.
bearing in mind that the area of a regular polygon is
(1/2)ap a = apothem, p = perimeter
so in this case that'd be (1/2)(5)(63).
it equals -1
you can think of it as 7-6=1 and at the end you can just add the negative sign
Hope it helps :))
If x-y=2 then x=2+y
And if you insert that in the first equation
Or
The first one is bigger so the answer is
1 and 4,2 and 3 are the alternate interior angles
Gosh that looks hard. but i wish you the best of luck on it
