Answer: B, angle 1 and angle 7.
Step-by-step explanation: Of all the options provided, B is the only one where the the two angles are not congruent to each other. Also, same side interior angles are congruent, so...
ANSWER
139°
EXPLANATION
One of the interior angle properties of a parallelogram is that adjacent interior angles are supplementary.
This means that, the adjacent interior angles add up to 180°.
If

Then

OR



Using the formula
L=rx (x=angle)
x=L/r
x=8/3
x=2.6 radians
They are not equivalent because
4:5
x2 x2
=8:10
it does not equal 8:12
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