Find x in the following diagram.
A) 70
B) 80
C) 110
D) 70
E) 250

Name: Find x in the following diagram. A) 70 B) 80 C) 110 D) 70 E) 250
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Question

Find x in the following diagram. 
A) 70 
B) 80 
C) 110 
D) 70 
E) 250

Quizplus · Accepted Answer

Using the opposite angles in a parallelogram are equal property, we can see that angle x is equal to 110 degrees. Then, using the angles in a triangle add up to 180 degrees property, we can find that the sum of the two known angles (40 + x) is equal to 70 degrees. Solving for x gives us x = 70 degrees. Therefore, the answer is choice A.

Find X in the Following Diagram