Page 1 - qua2

2017 .1

62 .2
2 1
B
= =8=
.3
y 45°
.4
A

(0,2) B A(1,1) 45°, 45°, 90°
A
1 45°
(0,1)
(0,1) 1

45° x .( , ) 1
O B

7 =3+
=5+

7=8+2 / 8
1 = 2 /: 2

=

89 9 100
. 91

+ 99
9

108

1+0+8=

1