ĐỀ THI QUỐC TẾ CẤP ĐỘ ELEMENTARY NĂM HỌC: 2021 – 2022 – TOÁN 7, 8
Bài 1 (Proposed by Hirad Aalipanah). Each side of square ABCD with side length of 4 is divided into equal parts by three points. Choose one of the three points from each side, and connect the points consecutively to obtain a quadrilateral. Which numbers can be the area of this quadrilateral? Just write the numbers … Read more