Entertaining Geometry

Can there be geometry in the forest, in an open field, on the road, in the dark, on a film set, in newspaper headlines and articles, where the sky meets the earth? It turns out, there can! Geometric quantities and... concepts can be found all around us. These include planes and angles, distances and perspectives, simple and intricate geometric figures. Some of them can be drawn in a single stroke, without lifting the pen from the paper. Perhaps the reader is already familiar with the expressions: "pi number" and "squaring the circle". How and when did they arise, and how can they be calculated? Yakov Perelman’s book "Entertaining Geometry" will help to supplement and diversify school knowledge with lively examples, clear explanations, and unusual problems. For middle school age.