Question

huuu

請問為什麼用藍筆畫的會相等呢

13
4
(4)---
2
BC = AC-
AD AB = AE * AB =
18. AABC中,AB=4,AC=BC,D為BC中點,求ADABL
A
AD = 1/2 AB + ² AC
-
AC AB +
AB
AB + 2 AB + AU = ²2/AC - LAB
2
-
ABI — AB + = AC)
BODO O
-20) 2(04) 06.2) 119= = |AB|²+ = |AB||AO|
AE AB = 3 × 4 = 1² + xib + { x
x
2
19.正六邊形 ABCDEF中,AC.AD=1,則AB·屈=?
1
(B)--th: 10 (0)
2
3
0
(L.S (D),28
3
C
AN
Zbir
A
B
1(E)
(E)-COLE SS
6

Answer 1

xiaoqi

AE是AD的正射影