Cambridge International Mathematics

2 ANSWERS

dcannot form a triangle

2 The sum of the lengths of any two sides of a triangle must be

greater than the length of the third side.

EXERCISE F.1

1AandD; BandE2AandO; E,IandM; FandH

3a iFG iiFbGH biON iiObNM

ciQR iiQbRP diTS ii TbSR

eiON iiObNM fiFE iiFbED

EXERCISE F.2

1aA and CfSSSg bA and BfRHSg

c B and CfAAcorSg dA and CfSASg

eA and CfSASg f B and CfRHSg

gA and CfSSSg hB and CfAAcorSg

2a¢PRQ»=¢ZXYfSASg b¢ABC»=¢LKMfSSSg

c ¢ABC»=¢FEDfAAcorSg

d¢ABC»=¢EDFfAAcorSg

e¢ABC»=¢FEDfAAcorSg

f Only one pair of sides and one angle are the same ) ¢s

may or may not be congruent (not enough information).

g¢ABC»=¢PQRfSSSg

h¢s are similarfall angles equalgbut may or may not be

congruent (not enough information).

i ®and ̄are common to both, however sides EF and CB are

equal but not corresponding ) ¢s are not congruent.

j ¢DEF»=¢ZYXfRHSg

EXERCISE G

1a 8 bAB¡ cO+,O¡,A+,A¡ d 44 :4%

2a i35 000 000t ii20 000 000t

b¼550 000 000t c¼ 34 :5% d¼ 76 :3%

3a i 17 : 5 oC ii 25 oC iii 32 oC

bi 1 pm to 6 pm ii 6 am to 1 pm c 34 oCat 1 pm

4a i 38 ii 69 bi 81 :6% ii 40%

5a 80 students bbanana c 12 :5% d 57 :5%

6a8% bFrance c South Korea

d 0 ¡ eHong Kong

7a i 16 - 24 ii 85+ bi 23 :9% ii 7 :45%

8a 9 km b 50 min c 4 km d 30 min e 10 : 8 km/h

9a i 865 km ii 129 km b 1379 km c 2 h 55 min

7cm

2cm 3cm

IB MYP_3 ANS

cyan magenta yellow black

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100 100
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100 100
Y:\HAESE\IGCSE01\IG01_AN\AssKnowGm-Pu\002IB_IGC1_agm_an.CDR Friday, 21 November 2008 10:07:40 AM PETER