
A privacy-conscious worked example with the original question, step-by-step reasoning, common traps, and similar practice.
Guided solution
To solve this problem, we need to understand how the diagonals of a square work and how they affect the angles.
The problem requires understanding of symmetry and angles in a square, which can be moderately challenging for grade-4 students.
The diagonals of a square bisect the angles, creating 45° angles. Cutting angle X in half results in 22.5°, and extending it forms an angle of 112.5° with the square's side.