Task: Translation
Input (Xhosa): Wayenolwazi ngendlela yamehlo eyinto ebonakalayo yokuphinda ubengezelo lwembombo yalo ukusuka kwimehlo eliphindene kabini phakathi kwembombo nesipili.
Output (English): He was aware of the optical principle that if an object is seen by double reflection its angle from the eye is twice the angle between the mirrors.