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2 http://www.manabino-academy.com

1 1 1.1............................................. 1 1.2......................................... 2 1.3............................................. 4 1.4............................................. 5 1.5............................................ 6 2 9 2.1........................................ 9 2.2.................................. 11 2.3.......................................... 13 2.4.................................... 15 2.5............................................ 16 2.6....................................... 17 3 19 3.1......................................... 19 3.2................................... 21 3.3............................................... 23 3.4............................................... 25 3.5............................................... 26

http://www.manabino-academy.com 1 1 1.1 2 1 2 3 2 2 EF EF 1 1 2 E H F G EFGH 2 E F H G E, H, G, F EHGF

http://www.manabino-academy.com 2 1.2 2 3 ( EF) 1 3 2 2 E F E F 3 1 E F 1 2 1 3cm 7cm 5cm 2 E 60 45 5cm F 3 H 3cm 60 G 5cm I 4 J 5cm 60 L 5 7cm 5cm M 6 P 60 3cm 5cm R 45 N 3cm O Q K 1 3 3 5

http://www.manabino-academy.com 3 3cm 5cm 3cm O 5cm 7cm N 7cm M 3 2 ONM 3 2 1 1 4 L E 60 45 60 45 5cm F J 5cm K 1 2 EF LJK 1 3 2 2 6 G Q 3cm 3cm 60 60 H 5cm I P 5cm R 2 2 GHI QPR 2

http://www.manabino-academy.com 4 1.3 p q p q 1 3 (1) 2 (2) (1) : : 2 (2) : : 1 3 p q (1) 2 (2) 9 18 (3)

http://www.manabino-academy.com 5 1.4 1 1 1 4 1 2 1 2 2 1 3 4 1 2 1 2 1 2 2 1 3 4 1 2

http://www.manabino-academy.com 6 1.5 2 ( i ) 2 ( ii ) (iii) (iv) 1 5 =, = = 2 2 (1) 2 : =, = : = 2

http://www.manabino-academy.com 7 (2) 1 1 2 1 1 = 2 (3) =, = 1 1 2 = (4) (1) (3) ( i ) 2 ( ii ) =, = = (iii) 2 (iv) = (5) (4) = 1

http://www.manabino-academy.com 8 = 2 = 3 1 3 2 =

http://www.manabino-academy.com 9 2 2.1 2 = 1 2 2 2 2 1 = 2 = 2 = = = = = 1

http://www.manabino-academy.com 10 = 2 = 3 1 3 2 = 2 2 1 = 2

http://www.manabino-academy.com 11 2.2 1 2 2 2 2 2 = 2 2 2 2 = = : = : = = 1 = 2 180 = 180 ( + ) 3, = 180 ( + ) 4 1 4 = 5 = 6

http://www.manabino-academy.com 12 2, 5, 6 1 = 2

http://www.manabino-academy.com 13 2.3 3 3 2 1 2 2 2 3 2 3 2 3 3 3 3,, 3 = = = = : = = : = = = = = 2 = 1 = 2 = 2

http://www.manabino-academy.com 14 1, 2 = = 3

http://www.manabino-academy.com 15 2.4 1 3 2 3 2 4 3 3,, 3 3 = = = = = = = = 2 = = 1 = = 2 1, 2 = = 3

http://www.manabino-academy.com 16 2.5 1 2 5 (1) = = (2) (1) : = : = = = 2 (2) : : 2 1

http://www.manabino-academy.com 17 2.6 3 ( i ) 3 ( ii ) 2 (iii) 1 1 1 2 1 E F E F 2 6 EF = E, =, = F = 90 EF EF = E, =, = F = 90 E F 1 2 EF = E, =, = F = 90 EF EF = E 1 = 2 = F = 90 3

http://www.manabino-academy.com 18 180 = 180 ( + ) 4 E = 180 ( + F) 5 2 5 = E 6 1, 2, 6 1 EF 2 6 EF = E, = F, = F = 90 EF

http://www.manabino-academy.com 19 3 3.1 2 ( i ) 2 ( ii ) 2 (iii) 3 1 =, = 2 //, // //, // =, = 2 // 1 // 2 1, 2 = 3 = 4

http://www.manabino-academy.com 20 = 5 3 5 1 =, = 3 1 (1) =, = (2) O = O, O = O O

http://www.manabino-academy.com 21 3.2 1 2 2 2 3 2 4 5 1 3 2 =, = 2 //, // =, = //, //

http://www.manabino-academy.com 22 2 2 = 1 = 2 = 3 1 3 3 = 4 = 5 4, 5 //, // 2 3 2 E O, (1) =, = (2) O = O, O = O (3) =, // E O

http://www.manabino-academy.com 23 3.3 4 360 1 360 4 = 90 4 =, = 2 1 2 3 2 2 2 4 ( i ) 1 ( ii ) 3 3 4 = = = (= 90 ) 2 2 (), () 1 () 180 + = 180 ( + = 180 ) 180 = 90 2 = = 90 1 = 2 180 + = 180 3

http://www.manabino-academy.com 24 1, 3 90 + = 180 = 180 90 = 90 4 1, 2, 4 = = = = 90 4 3 3 =

http://www.manabino-academy.com 25 3.4 4 = = = =, = 2 1 2 3 2 2 2 4 ( i ) 1 2 ( ii ) 3 3 = 4 = = = 4 2 = 1 = 2 = 3 1 3 = = = 4 3 4

http://www.manabino-academy.com 26 3.5 4 4 4 4 4 4 ( i ) 1 ( ii ) ( i ) 1 2 ( ii ) 1 1 2