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初中三角形面积练习题

  • 2026-11-01 02:55:12
初中三角形面积练习题
最近看到一道题，长方形切割成4部分，面积分别是S、S+1、S+2、S+3，求S。
我来加点难度，长方形切割成4部分，面积分别是S、S+c、S+d、S+e，且c+e=d，求S。
下面这道更加一般化，长方形切割后其中3部分面积分别为A、B、C，求第4块面积X。
初中生可做，初二就可以，正常初一教学进度应该是做不了上面这种题。
最后附送一道初一练习题。
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一年级数学:口算练习题大全,可直接打印,有需要的可以收藏!

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  1. CONNECT:[ UseTime:0.000769s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000989s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000563s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000342s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000655s ]
  6. SELECT * FROM `set` [ RunTime:0.000286s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000677s ]
  8. SELECT * FROM `article` WHERE `id` = 531211 LIMIT 1 [ RunTime:0.000375s ]
  9. UPDATE `article` SET `lasttime` = 1793566655 WHERE `id` = 531211 [ RunTime:0.001355s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000324s ]
  11. SELECT * FROM `article` WHERE `id` < 531211 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000441s ]
  12. SELECT * FROM `article` WHERE `id` > 531211 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000392s ]
  13. SELECT * FROM `article` WHERE `id` < 531211 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000690s ]
  14. SELECT * FROM `article` WHERE `id` < 531211 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000565s ]
  15. SELECT * FROM `article` WHERE `id` < 531211 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000718s ]
0.080408s