Find the value of x in the parallelogram below.

http://roads.advancedacademics.com/contentserver/content/roadssection/279497/questions/assessments/q-quadrilateralspolygonsunitexam/geometry_unit5_exam_final_34q.gif

A. 102.3°
B. 127°
C. 53°
D. 106°

Question

Find the value of x in the parallelogram below.

http://roads.advancedacademics.com/contentserver/content/roadssection/279497/questions/assessments/q-quadrilateralspolygonsunitexam/geometry_unit5_exam_final_34q.gif

	A.	102.3°
	B.	127°
	C.	53°
	D.	106°

whpalmer4 · Answer

What do you know about the properties of angles in a parallelogram?

anonymous · Answer

i know nothing, online school does not teach you, it gives you answers and you have to chose. basically the worst decision of my life, i always feel stupid now, which is why im looking for help all the time.

mertsj · Answer

Why don't you read the explanations?

whpalmer4 · Answer

Well, there are two things that will be helpful to solve this.  
1) the sum of the interior angles in a polygon with n sides is (n-1)*180 degrees
2) the diagonally opposite angles in a parallelogram are congruent (equal)

whpalmer4 · Answer

Crap, that should be (n-2)*180

anonymous · Answer

soo, if i have the four sides i do (4-1)*180 ??? doesnt seem right.

whpalmer4 · Answer

No, I fat-fingered the formula, it should be (4-2)*180.

anonymous · Answer

oh, thats what i read i just typed the first one, cause thats what i was looking at. my bad. okay. thank you!

whpalmer4 · Answer

So, do you have an answer now?

anonymous · Answer

360 ? (:

anonymous · Answer

oh, thats clearly not right. nevermind, then no. hah.