8.34 ୋ 8
ӋɨΐྡʕεᗙҖٙࠦጐ�[ୋ 21-24 ᕚ]
21. 22.
y
x
J(3,1)
O
H(3,-4)
G(-2,-4)
E(-4,4)
F(-2,0)
y
x
C(12,-6)
B(-4,-6)
A(-4,6)
O
23. 24.
A(- 4,6 )
F(- 12,2)
D(2,-4)
E(-10,-4)
B(2,2 )
C(-1,2 ) y
x
O
E(- 5,4 )
G(5,2)
F(-2,- 2) y
x
O
25. (a) ίɓٜԉѬᅺ̻ࠦɪ�ᖭɓࡈ˸ A(-7 , 4)�B(-2 , -3)�
C(0 , -3)�D(5 , 4) ʿ E(-1 , 0) މᓃٙʞᗙҖ ABCDE�
(b) ӋʞᗙҖ ABCDE ٙࠦጐ�
26. (a) ίɓٜԉѬᅺ̻ࠦɪ�ᖭɓࡈ˸ H(1 , 4)�J(-1 , 1)�
K(0 , -1)�L(2 , -1) ʿ M(3 , 1) މᓃٙʞᗙҖ HJKLM�
(b) ӋʞᗙҖ HJKLM ٙࠦጐ�
27. ʊٝྡʕ̬ᗙҖ OPQR ٙࠦጐ݊ 25.5 ̻˙ఊЗ�Ӌ R ٙѬᅺ�
28. ʊٝྡʕεᗙҖ ABCDEFGH ٙࠦጐ݊ 14 ̻˙ఊЗ�
Ӌ y ٙ࠽�
➥ Է 10
➥ Է 11
y
x
O
Q(-9,3) P(-4,3)
R
y
x
B (- 1,y) A (1,y)
C(-1,- 1)
O
H (1,- 1)G(3,- 1)
D (- 3,-1)
E (- 1,- 3) F(1,- 3)
3
2
2
4
4
2
3
3
33.5 ̻˙ఊЗ
72 ̻˙ఊЗ
27 ̻˙ఊЗ
97 ̻˙ఊЗ
25 ̻˙ఊЗ
12 ̻˙ఊЗ
(0 , -4)
2