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Sagot :

Answer:

40º

Step-by-step explanation:

Well, you can also use the definition of  supplementary angles, where the angles always equal 180º. (its a straight line basically so something like <1 + <A = 180º)

Then 180º-40º=140º which is equal to <A and <D.

Since <D + <2 = 180º and <D = 140º,

then <2 = 40º

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