Changes

|style="width: 50%;|Step 12 - Here we can draw the square by using very short code.

|style="width: 50%;|Step 12 - Here we can draw the square by using very short code.

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|style="width: 50%;|{{ext-img|450px|https://upload.wikimedia.org/wikipedia/commons/9/92/Turtleblocks_construction_5.png }}

|style="width: 50%;|{{ext-img|450px|https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Turtleblocks_construction_2.png/800px-Turtleblocks_construction_2.png }}

|style="width: 50%;|{{ext-img|450px|https://upload.wikimedia.org/wikipedia/commons/9/95/Turtleblocks_construction_4.png }}

|style="width: 50%;|{{ext-img|450px|https://upload.wikimedia.org/wikipedia/commons/9/95/Turtleblocks_construction_4.png }}

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