C. The sun of the areas of its exterior surfaces is the correct answer.
I say 3 if I’m wrong sorry
0.000000001=0.1
0.000000001=10^9
0.000000001=10^9x10^9=01
0.000000001=10^-9 =0.1
=10^-9 x 0.1
The answer is certainly c because i did that and got it right
In a parallelogram, opposite angles are congruent. However, the same thing cannot be said for the other.
You can label one pair of opposite angles with x and the other 9x.
You also know that each quadrilateral has interior angles that add up to 360 so you can create the equation of
9x+9x+x+x=360
which can be simplified into
20x=360
x=18
Now, you know the angle measures of one pair of opposite angles. to find the other you plug in 18 to our other equation and multiply 9 to get 162.
The angles of the parallelogram is 18,18, 162 and 162.
Note: you can check if this is right if all the angles add up to 360.
