CBSE Class 8 Mathematics Question 4 of 9

Exploring Some Geometric Themes — Question 4

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4
Question
Mark the sides of a square into thirds and cut off each of its corners as far as the marks. What shape is left? (Page 76)
Answer

KLMN is a square. Each side of the square is divided into three equal parts. When the four corners of the square are cut off, we get an octagon. Can you describe a solid and a viewpoint that would result in each of the following cases? If it helps, you can imagine the solid passing through a wall like Tom did, and leaving a hole of the appropriate shape. (Page 77)