
What if you need to draw a circle, and a compass at hand is not! To get out of this situation by making a simple compass of the bent and strapped to the pencil in the right place for a stylus pen, as shown in the figure.
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Summer is a time of exciting tours for lovers of water tourism. However, it is not easy to reach the shore with a heavy backpack and kayak. In one of the summer issues of the...
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...and then you don't have to throw away empty plastic bottles of detergents. The tip of the bottle into a convenient funnel, the lower part will put on the table is a glass for...