Question

Find x in each case
​

Answer 1

Answer:

please marks it brainleist

Answer 2

Answer:

i,    x = 130°

ii,   x = 50°

iii,  x = 60°

Step-by-step explanation:

(i)  x = 60° + 70°

    x =  130°

ii) let the unknown angle, b =  

  b + 110° = 180°,

  and switch like terms to one side and unlike terms to one side,

  b = 180° - 110°, note that positive number, if it jumps equal sign

  it will change it's sign to negative, same as negative to positive, if it's

   jumps equal sign.

   b = 70°, where finally to find x,

   x = 110° - 60

   x = 50°

ii) let the unknown interior angle be, y

   y + 120 = 180°

    y = 180° - 120°

    y = 60°,

  therefore, for x

    2x + x = 180°

          3x = 180°

            x = 60°