The answer your looking for is 2.6.
<span>you have a geometric series
since you are summing the powers of 1/5, this converges
(1/5 < 1)
it's equal to 1/(1-1/5)
=1/(4/5) = 5/4
for geometric series, the sum is always
x = 1/(1-r)
where r is the ratio of successive terms.
if you set the sum equal to x:
x = 1+r+r^2+r^3...
and multiply each term by r
rx= r+r^2+r^3+....
then subtract
x-rx = 1+r-r+r^2-r^2+r^3-r^3+....
x-rx = 1
x(1-r)=1
x=1/(1-r)</span>
Angle Side Angle theorem (ASA)
We can see that angles BAC and EDF are equal
We can also see that lines AC and DF are equal
And we can see that angles ACB and DFE are equal