MATHEMATICS · Subjective · CBSE · Mathematics · Lines and Angles · Lines and Angles
Problem
During a road survey, two kerb lines p and q are meant to be parallel. A crosswalk line t intersects them. The measured exterior angle between t and kerb line p is 78∘, while the corresponding angle between t and kerb line q is 81∘. Each measurement is accurate to within ±1∘. Decide whether the kerb lines can be accepted as parallel within this tolerance and justify your answer briefly.