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11-07-2017
Mathematics

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what is the measure

what is the measure class=

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syed786 syed786

11-07-2017

Angle 1 is equal to angle3

And we know. angle 4 plus angle 3 makes an angle 180 degree

SO

We subtract angle 4 to angle 3

Angle 3 + angle 4 = 180°

40 + angle 4 = 180°

Angle 4 = 180-40 = 140

Angle 4 = 140° answer

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