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Clearnote
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Junior High
Mathematics
第二題不懂
Mathematics
Junior High
about 2 yearsago
🐇
第二題不懂
點 1 幾何證明 1 若要證明兩個直角三角形全等,則下列條件中,何者無法正確說明? (A)兩角對應相等 (B)兩股對應相等 (C)其中一銳角和斜邊對應相等 (D)一股和斜邊對應相等 )2 如右圖,△ABC中,AD、BE 分別為 BC、AC 上的高,AD 和 BE 相交於 H點,∠BAC=75°,∠ABC=45°,BC=4,則 AD=? (A) 3/3 +2 户 (B) 2√3 +6 (C) 6-2/3 (D) 8-3√2 3. 右圖是小華利用尺規作圖作∠BAC 角平分線的作圖痕跡,則依作 圆疗跡可利用下列何者全等性質來證明(BAP=∠CAP? B HE 45⁹ D D B
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