What is the measurement for that angle x?

Explain if you can PLEASE.

Thank you (Wink)

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- May 29th 2009, 11:29 AMhellotarinaFind the measure of Angle x?
What is the measurement for that angle x?

Explain if you can PLEASE.

Thank you (Wink) - May 29th 2009, 11:52 AMHallsofIvy
By the "vertical angles" theorem, when two lines cross, angles opposite one another have the same measure. So one of the angles

**inside**the triangle is also x. Another angle in the triangle has measure 60 for the same reason and the third is "supplementary" to an angle with measure 140 so it has measure 180- 140= 40 degrees. Of course, the angle in the triangle must sum to 180 degrees. Can you find x now? - May 29th 2009, 11:53 AMskeeter
- May 29th 2009, 12:13 PMhellotarina
Is this right? x=40 or look at pic

- May 29th 2009, 01:31 PMcraig