Mathematics
Junior High
Resolved
xの角度を求める問題なんですが、なぜ△OBCは二等辺三角形なんですか?教えて欲しいです🙇♀️
(2) ∠BOC
=50°×2
=100°
△OBCは二等辺
三角形だから,
Lx
=(180°-100°)÷2
=40°
B
IC
A
50°
100°
C
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間違えましたOB=OCです🙏