ABC is a triangle with AC = 6cm and BC = 9 cm. AB has been drawn below.
- (a)ABC is a triangle with AC = 6cm and BC = 9 cm. AB has been drawn below.
- (a)(i)Using a ruler and a pair of compasses only, construct triangle ABC.[2]
- (a)(ii)Measure BÂC.[1]
- (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]
- (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°.
- (c)(i)Find PÎS, giving a reason for your answer.[2]
- (c)(ii)Find PÎQ.[1]
- (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.
- [2] Correct construction with arcs
- [2] B1 for correct triangle with arcs missing or arc 6 cm from A or arc 9 cm from B
- [1] 77° to 81°
- [1] FT their angle BAC
- [2] 79875 cao
- [2] B1 for 225 and 355 seen
- [2] 66° alternate [angles]
- [2] B1 for 66
- [1] 79°
- [1] FT 145 – their 66
- [3] RQT
- [3] B1
- [3] RTQ
- [3] B1
- [3] QT is common oe
- [3] B1
- [3] AAS oe
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