64 ＝ 65!?

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# 64 ＝ 65!? - PowerPoint PPT Presentation

64 ＝ 65!?. 先看下面這幅 Gif 圖片：. 原來是 64 個小方塊，剪裁重拼後，竟然是 65 個小方塊，奇怪！ 問題出在哪兒呢？. 2/8. 按題意，將下麵的方塊剪裁為甲、乙、丙、丁四塊. 甲. 乙. 8. 丙. 丁. 8. 3/8. 先將甲、乙兩塊按題意拼接起來，它們的寬度是 13 ，高度呢？. C. 甲. 3. 4.875. A. 乙. B. 8. 5. 高度＝ BC ＝ BA+AC ，我們很容易算出 AB ＝ 15/8 ＝ 1.875 ，則 BC ＝ 4.875.

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## PowerPoint Slideshow about '64 ＝ 65!?' - shanae

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2/8

8

8

3/8

C

3

4.875

A

B

8

5

4/8

0.125

4.875

5

5/8

13

5

8

C

3

D

5

0.125

B

3

4.875

A

6/8

《綿雪》

PPS作;MJF

2014.02.10

7/8

13

5

8

C

3

D

5

B

3

A

8/8