coincide

Everyday

1. To happen at the same time as something else (My birthday coincides with the holiday). tree →
2. To be the same or agree (Our ideas coincide). tree →
3. To be in the same place or cover the same space; in maths, shapes or lines that coincide lie exactly on top of each other. tree →

In the lessons

In maths and geometry: two lines coincide when they are the same line; matching shapes coincide when one is placed on the other. In everyday and formal language: events coincide. Phrase: coincide with.

Examples

• The match coincided with my piano lesson. tree →
• Our views on the trip coincide. tree →
• Fold the paper so the corners coincide. tree →
• The two lines coincide, so they have every point in common. tree →
• The festival coincides with the full moon. tree →
• Her arrival coincided with the rain. tree →

Note

Followed by «with». Stress: koh-in-SIDE. In geometry, coinciding lines are not «parallel» in the usual school sense; they are the same line.