1. Постройте трерольких со сторонами:

This appears to be an incomplete mathematical instruction in Russian. 'Постройте' means 'Construct'. 'трерольких' is likely a misspelling or an incomplete word. It might be intended to be 'треугольник' (triangle) or 'треугольники' (triangles). 'со сторонами:' means 'with sides:'. This is a mathematical instruction in Russian, likely from a geometry or trigonometry lesson. The phrase translates to: "1. Construct [likely 'triangles' or 'a triangle'] with sides:". The word 'трерольких' is not a standard Russian word and is likely a misspelling of 'треугольник' (triangle) or 'треугольники' (triangles). The instruction is incomplete as the lengths of the sides are not provided in the visible part of the text. The labels 'a', 'b', and 'c' likely refer to the sides of the triangle(s) to be constructed. To fully understand and solve this problem, the complete text, including the side lengths and any additional context, would be necessary.