2010 · Q61
In the figure given above (AB parallel to CD; transversals XO, YO with ∠BXO = 125°, ∠DYO = 35°), AB is parallel to CD. What is ∠XOY ?
Elementary MathematicsGeometry
- A80°
- B90°
- C95°
- D100°
Explanation
Drawing through O a parallel: ∠XOY=(180°-125°)+35°=90°.