Mathematics
Junior High
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國二下數學3-1,想問螢光筆處
,\ABC 中,P 為∠ABC 與ZACB Z
外角角平分線的交點,又∠CBP、∠BCP 的
角平分線交於O,若∠A =48°,則∠BPC
+∠BOC = ×176 189 度。
A
P
解析:∠BPC =90°-,×48°=66°
2
∠BOC =90°+∠BPC =90°+33°=123°
∴∠BPC+∠BOC =66°+123°=189°
B
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