ΌഃʿЧ�ɚ�9.45
ሙੀݺਗ 9.2 ̙Ԉ�Շࡈ̬ᗙҖٙהϞ࿁Ꮠԉഃ (AAAA) אה
Ϟ࿁ᏐᗙϓˢԷࣛ�༈Շࡈ̬ᗙҖʔɓ֛Ч�
1. ɨྡהͪމڗ˙Җ ABCD ձڗ˙Җ EFGH�̴ࡁٙהϞʫԉேٜ݊ԉ�
A D
B C
AB BC CD AD
ڗܓ (cm)
ڌ A
E H
F G
EF FG GH EH
ڗܓ (cm)
ڌ B
(a) ඎܓՇࡈڗ˙Җᗙٙڗܓ�Ԩҁϓڌ A ձڌ B�
(b) ҁϓɨΐᕚ�
EF
AB = �� FG
BC = �� GH
CD = �� EH
AD =
(c) ڗ˙Җ ABCD ձڗ˙Җ EFGH ݊щЧ�
݊����� щ
2. ɨྡהͪމᗙڗ݊ 3 cm ͍ٙ˙Җ PQRS ձᗙڗ݊ 4 cm ٙഷҖ WXYZ�
3 cmP S
Q R 4 cm
Y
W
X Z
(a) ҁϓɨΐᕚ�
WX
PQ = �� XY
QR = �� YZ
RS = �� WZ
PS =
(b) ͍˙Җ PQRS ٙʫԉ᙮ࡳᗳйٙԉ��̙፯εɓධ��
ቚԉ���� ٜԉ���� ඔԉ
(c) ഷҖ WXYZ ٙʫԉ᙮ࡳᗳйٙԉ��̙፯εɓධ��
ቚԉ���� ٜԉ���� ඔԉ
(d) ͍˙Җ PQRS ձഷҖ WXYZ ݊щЧ�
݊����� щ
課堂活動活動 9.2