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Find the value of x. ?

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  1. the third angle of the triangle is 180-70= 110 deg.

    Because there are 180 deg in a triangle, 110+x+2x+10=180.

    3x=60, x=20 degrees.


  2. x+2x+10+110=180

    3x=60  

    x=20

    (the angle that equals to 70 , completes the angle next to it to 180 and that's why it's 110)
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