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*AB*,

*CD*and

*EF*are straight lines.

a) Ava assumes that

*AB*and

*CD*are parallel.

What answer should she get for the size of angle

*y*?

b) In fact,

*AB*and*CD*are**not**parallel- angle w is 60°

What effect does this have on the size of angle

*y*?

Tick a box.

Show working to support your answer.

**Question**

a) Ava assumes that

What answer should she get for the size of angle

*AB*and*CD*are parallel.What answer should she get for the size of angle

*y*?**[4 marks]**

b) In fact,

*AB*and*CD*are**not**parallel- angle w is 60°

What effect does this have on the size of angle

*y*?

Tick a box.

Show working to support your answer.

**[3 marks]**