Remember that opposite angles are congruent.
So,
we know that <E= <G
That is 45+45= 90 degrees
We also know that consecutive angles are supplementary. E and F would equal 180 degrees.
180-45=135
<F= 135 degrees.
We can check this by seeing if all the angles add up to 360 degrees/
135+135+45+45
=360 <== this works
I hope this helps!
~kaikers
<u>Answer:</u>
The correct answer option is B. ![S _ n = a _ 1 [ \frac { 1 - r ^ n } { 1 - r } ]](https://tex.z-dn.net/?f=%20S%20_%20n%20%3D%20a%20_%201%20%5B%20%5Cfrac%20%7B%201%20-%20r%20%5E%20n%20%7D%20%7B%201%20-%20r%20%7D%20%5D%20)
.
<u>Step-by-step explanation:</u>
The following is the formula that is used to find the sum of a geometric progession:
where 
is the sum, 
is the first term, 
is the common ratio while 
is the number of terms.
Answer:
Mean=19.5
Step-by-step explanation:
Mean= (16x1 + 17x4 + 19x4 + 21x1 + 22x2 + 23x1 + 25x1)/14=273/14=19.5
Property of zero as an exponent
