Hexagram - Shatkona
The Hexagram also known as the Shatkona is the six pointed star. The symbol is made up of two triangles, one facing upwards symbolizing the male energy,and the other facing down symbolizing the female energy. This symbol also signifies the union of Shiva - a hindu god and his wife Shakthi.
This symbol is known as The Shield of David or Magen David in Hebrew and is a generally recognized symbol of Judaism.
It can be found on the flag of Israel.