關於BOF25的百科

• 如圖，已知直線AB和CD相交於O點，*線OE⊥AB於O，*線OF⊥CD於O，且∠BOF=25°．求：∠AOC與...

• 問題詳情：如圖，已知直線AB和CD相交於O點，*線OE⊥AB於O，*線OF⊥CD於O，且∠BOF=25°．求：∠AOC與∠EOD的度數．【回答】【解答】解：∵OF⊥CD，∴∠COF=90°，∴∠BOC=90°﹣∠BOF=65°，∴∠AOC=180°﹣65°=115°，∵OE⊥AB，∴∠BOE=90°，∴∠EOF=90°﹣25°=65°，∴∠EOD=90°﹣65°=25°．知識點：角題型：解...
• 2020-11-2730326