Question

Find the lettered angles in the diagram ​

Answer 1

x = 42° , 2x = 84°

Explanation:

the 3 angles lie on a straight line and sum to 180° , that is

54 + x + 2x = 180

54 + 3x = 180 ( subtract 54 from both sides )

3x = 126 ( divide both sides by 3 )

x = 42

then

x = 42° and 2x = 2 × 42° = 84°