Литература для детей 0-7 лет, Геометрия. Мерзляк А.Г. (7-9) (Углублённый)

<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="none" viewBox="0 0 12 12"><path stroke="currentColor" stroke-linecap="round" d="M2.25 4.125 6 7.825l3.75-3.7">

<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="none" viewBox="0 0 12 12"><path stroke="currentColor" stroke-linecap="round" d="M2.25 4.125 6 7.825l3.75-3.7">

<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="none" viewBox="0 0 12 12"><path stroke="currentColor" stroke-linecap="round" d="M2.25 4.125 6 7.825l3.75-3.7">

<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="none" viewBox="0 0 12 12"><path stroke="currentColor" stroke-linecap="round" d="M2.25 4.125 6 7.825l3.75-3.7">