If we join the Center with different corners of the polygon,we find 10 Isoceles triangle with equal side=9.14cm, Making an angle of 36° between the equal sides.
Area of 1 triangle= a*b*sinC/2
= 9.14*9.14*Sin36°/2
= 9.14*9.14*0.587/2
=24.51 cm^2
Area of 10 triangle= 24.51*10
= 245.1cm^2
Okay, so you see that linear pair formed of angle 1,2,3
Now <1 = <5 and <3 = <6
So if 1 = 5, and 3 = 6
We also know that linear pair has 180 degrees and Hence proved angle 6,5 and 2 is equal to 180 degrees
Assuming - m = price of each magazine:
Answer: 12/m (b)
It states that Deshawn bout SOME magazines not only one for $12.
If each magazine costs the same amount then we must divide to find how many magazines he bought for $12.
