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O-LevelMathematicsGeometry4024/21 · May/June 2018 · Q611 Marks

ABC is a triangle with AC = 6cm and BC = 9 cm. AB has been drawn below.

  1. (a)ABC is a triangle with AC = 6cm and BC = 9 cm. AB has been drawn below.
  2. (a)(i)Using a ruler and a pair of compasses only, construct triangle ABC.[2]
  3. (a)(ii)Measure BÂC.[1]
  4. (b)A rectangular field has dimensions 220m by 350m, each correct to the nearest 10 metres. Calculate the upper bound for the area of the field.[2]
  5. (c)The points P, Q, R and S lie on the circumference of a circle. PQRS is a trapezium with PQ parallel to SR. T is the point on SR such that QPT = 66°, QTR = 35° and TQR = 79°.
  6. (c)(i)Find PÎS, giving a reason for your answer.[2]
  7. (c)(ii)Find PÎQ.[1]
  8. (c)(iii)Complete the statements below to show that triangle PQT is congruent to triangle RTQ. 1. Angle PTQ = Angle ................................... 2. Angle PQT = Angle ................................... 3. Triangle PQT is congruent to triangle RTQ. Congruency condition ...................................[3]

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Mark scheme

Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.

  1. [2] Correct construction with arcs
  2. [2] B1 for correct triangle with arcs missing or arc 6 cm from A or arc 9 cm from B
  3. [1] 77° to 81°
  4. [1] FT their angle BAC
  5. [2] 79875 cao
  6. [2] B1 for 225 and 355 seen
  7. [2] 66° alternate [angles]
  8. [2] B1 for 66
  9. [1] 79°
  10. [1] FT 145 – their 66
  11. [3] RQT
  12. [3] B1
  13. [3] RTQ
  14. [3] B1
  15. [3] QT is common oe
  16. [3] B1
  17. [3] AAS oe

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About this question

Topic
Geometry, O-Level Mathematics (syllabus 4024). Structured question, 11 marks.
Source
O-Level Mathematics, May/June 2018 Paper 2 Variant 1, question 6.

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