Question

Work out the value of x

Answer 1

20

Explanation:

• 4x + 5x = 180° (angles on the same side of transversal)

• 9x = 180°

• x = 180°/9

• x = 20°

Answer 2

• 
  `\sf x=20^o`

Explanation:

Consecutive interior angles are (supplementary angle) meaning that the sum of the consecutive interior angles is 180.

`\sf 4x +5x=180^o`

`\sf 9x = 180^0`

`\sf \cfrac{9x}{9} =\cfrac{180}{9}`

`\sf x=20^o`

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