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NOTE: Angles not necessarily drawn to scale.

NOTE Angles Not Necessarily Drawn To Scale class=

Sagot :

Answer:

60

Step-by-step explanation:

I'm assuming that ED is an exactly straight line, that would mean the angle is 180 degrees. So the sum of the angles in between should also equal 180. This gives you the equation

100 + 20 + x = 180

120 + x = 180

60  = x