ANSWERS 717
ciii same shape
diii same shape
EXERCISE 21F.1
1a 3 b 2 c ¡ 8 d 1 e 6 f 5
g 6 h 8 i ¡ 2
2a 3 and¡ 1 b 2 and 4 c ¡ 3 and¡ 2
d 4 and 5 e¡ 3 (touching) f 1 (touching)
3a§ 3 b§p
3 c ¡ 5 and¡ 2 d 3 and¡ 4
e 0 and 4 f ¡ 4 and¡ 2 g¡ 1 (touching)
h 3 (touching) i 2 §p
3 j ¡ 2 §p
7 k 3 §p
11
l ¡ 4 §p
5
EXERCISE 21F.2
1a bcd2a ia=1
ii 4
iii x=2(repeated)bia=1
ii ¡ 3
iii x=¡ 3 or 1cia=2
ii 8
iii x=¡ 2 (repeated)dia=¡ 1
ii 2
iii x=¡ 1 or 2eia=¡ 3
ii ¡ 3
iii x=¡ 1 (repeated)fia=¡ 3
ii ¡ 12
iii x=1or 4gia=2
ii 6
iii x=¡ 3 or¡ 1hia=2
ii 2
iii nox-interceptsiia=¡ 2
ii 5
iii x=¡^52 or 1EXERCISE 21G
1ax=¡ 2 bx=^32 c x=¡^23
dx=¡ 2 ex=^54 f x=10yx
@\=\-2!X+5@\=\-2!X(0' 5)Oyx@\=\3!X@\=\3!X-5!
(Ty_\'-\Wq_Tw_)Oy2 x4Oyx25-4Oyx-3 12O
-1 1yx
-1Oyx@\=\!X-4!+424O
yx
-3-3 O 1@\=\(!-1)(!+3)y2 x2
-1
O
@\=\-(!-2)(!+1)yx@\=\2(!+2)X8-2Oy
x@\=\-3(!+1)X-1-3Oyx
@\=\-3(!-4)(!-1)
-124
O 1yx@\=\2(!+3)(!+1)-3-16Oyx@\=\2!X+3!+22
Oyx@\=\-2!X-3!+5 5-\Tw_ 1
OIB MYP_3 ANS
cyan magenta yellow black(^05255075950525507595)
100 100
(^05255075950525507595)
100 100
Y:\HAESE\IGCSE01\IG01_an\717IB_IGC1_an.CDR Thursday, 20 November 2008 4:45:42 PM PETER