Angles (Including Parallel Lines): WJEC GCSE Foundation November 2021 Unit 1 Q16

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Foundation November 2021 Unit 1 Q16

16. AB and CD are parallel.

Diagram not drawn to scale

Calculate the value of \(x\). [3]

Mark scheme

Scheme	Marks	Comments
\(4x + 5 = 57\) or equivalent	M1
\(4x = 52\)	A1
\(x = 13\)	A1	FT from \(4x = k\). Accept \(x = k/4\) (but, if on FT \(k\) is a multiple of 4, final answer must be given as a whole number.) M1A1A0 for ‘\(x = 52/4\)’ Mark final answer. Allow (M1)A1A1 for a correct embedded answer BUT only (M1)A1A0 if contradicted by \(x \ne 13\).