阴影ABFE面积=ABCE面积-[BCF面积+EFC面积]
=[ABC面积+ACE面积]-[BCF面积+FFC面积]
=[ACE面积-BCF面积]
(因为 ABC面积=EFC面积)
阴影ABFE面积=ABCE面积-[BCF面积+EFC面积]
=[ABC面积+ACE面积]-[BCF面积+FFC面积]
=[ACE面积-BCF面积]
(因为 ABC面积=EFC面积)
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy