Foundation November 2019 Paper 3 Q14

OCRFoundationCurrent spec7 marksAngles (Including Parallel Lines)

14

(a) Three lines meet at a point.
Three lines meeting at a point, making angles 103°, 100° and a

Not to scale

Work out the size of angle \(a\). [2]

(b) XY and CW are parallel lines.
AB = CB.
Angle CAX = 130°.
Triangle ABC with A and B on line XY and C above; CW is parallel to XY going right from C; AB and CB are marked equal; angle CAX is 130°

Not to scale

(i) Complete this sentence.

Angle CAB = 50° because .................. [1]

(ii) Work out angle BCW.
Give a reason for each angle you work out. [4]
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