Files
ocr/QvqResult_18.txt
2025-08-14 16:04:59 +08:00

18 lines
555 B
Plaintext
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

【题干原文】
如图在四边形ABCD中∠A=∠B=90°O是边AB的中点∠AOD=∠BOC。求证四边形ABCD是矩形。
【基本元素表】
A、B、C、D、OAB的中点
线段ADDCCBBAODOC
∠A=90°∠B=90°∠AOD∠BOC
圆:无
【关系表】
AB ⊥ AD
AB ⊥ BC
O ∈ AB中点
∠AOD ≅ ∠BOC
AD // BC隐含于矩形结论
【元素位置】
A点在左下B点在右下D点在A点正上方C点在B点正上方O点在AB中点处。