C-08-Q097mediumsingle_mcq
In the proof of Theorem 20, the auxiliary line drawn through passes through—
In the proof of Theorem 20, the auxiliary line drawn through passes through—
- athe chord
- bthe centre
- conly
- donly
ব্যাখ্যা
In the proof, the auxiliary line is drawn from the vertex through the centre (extended to a point ). This splits the figure into two isosceles triangles, allowing the exterior-angle argument to be applied.