Triangle Knowledge Dataset of Grade-11 Students

This repository contains anonymized student-level data related to the triangle knowledge assessment in grade-11 students. The dataset includes participant background variables, item-level binary responses (Item1–Item74), total declarative and procedural knowledge scores, and concept-specific subscale scores for triangle-related constructs such as equilateral, right, isosceles, congruent, and similar triangles, as well as identification of triangle examples and non-examples. The deposited file contains 379 participant records. Because the dataset involves human participants, access to the underlying data was granted in accordance with ethical and consent conditions.