The image below shows two parallel lines cut by a transversal. What is the measure of angle 1?

Question

anonymous · Answer

attachment

anonymous · Answer

@NY,NY please help?

ny,ny · Answer

The angles are a pair of alternate interior angles. Know what that means?

anonymous · Answer

kind of sort of, can you explain?? i have problems with interior angles -.-

ny,ny · Answer

Yeah,|dw:1397017899075:dw| no problem.

ny,ny · Answer

So that's what we know so far. Do you understand this much?

ny,ny · Answer

@andrewkidd

anonymous · Answer

yes!

anonymous · Answer

@NY,NY

ny,ny · Answer

Okay cool. 
|dw:1397018616141:dw|
Can you find the measure of angle x?

anonymous · Answer

140 no?

ny,ny · Answer

No because |dw:1397018770229:dw|
The 140 degree angle is supplementary with angle x. 
Supplementary means the angles add to 180. 
The measure of a straight angle will always be 180 degrees.

anonymous · Answer

oh okay!!!

ny,ny · Answer

Sooooo what would angle x be if the agles are supposed to add to 180?

ny,ny · Answer

@andrewkidd

anonymous · Answer

Wouldn't I add the 140 and 180 together ? it would be 320

ny,ny · Answer

No because the whole line = 180. 
Remember the angle measure of a straight line is 180 degrees. |dw:1397019327918:dw|