2025 · Q72
In right triangle ABC, right-angled at B, D is [the exact construction could not be verified]. What is [the requested length]?
Elementary MathematicsGeometry: Lines, Angles and Triangles
- Ap/3
- Bp/2
- C√3p/2
- D√3p/4
Explanation
Right triangle ABC with a construction at D that could not be recovered (options p/3, p/2, sqrt(3)p/2, sqrt(3)p/4). The stored key C (sqrt(3)p/2) agrees with the published coaching key (PW, CDS 2 2025 Set A). Note: key disputed - independent verification inconclusive.