2010.C3

Part of Durer Math Competition CD 1st Round - geometry

Problems(1)

ball angle 45^o in pool table 3x4 2009-10 Dürer Round1 C3

Source:

The sides of a pool table are

3

4

meters long.We push a ball with an angle of

45^o

at the sides. Is it true that it returns to where it started no matter where we started it from?

geometryreflectionDurer