Mathematics
Senior High
(2)がなぜ90°になるのかが分かりません
右の図の正六角柱 ABCDEF - GHIJKL について,
55
次の2直線のなす角0 を求めよ。
ただし,0°≧0≦90° とする。
(1) AB, KL
(3) AB, GI
(2) AD, IK√
◆教p.113
A
G
----
I
B
H
ETILIL
E
LIE
K
T
J
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