Indian Hexagram Ritual

From: Inman, Thomas (1820-1876) Ancient pagan and modern Christian symbolism (1884)

Sri lantra [Yantra] is an ancient Hindoo [Hindu] emblem. The circle represents the world, in which the living exist; the triangle pointing upwards shows the male creator; and the triangle with the apex downwards the female; distinct, yet united. These have a world within themselves, in which the male is uppermost. In the central circle the image to be worshipped is placed. When used, the figure is placed on the ground, with Brahma to the east, and Laksmi to the west. Then a relic of any saint, or image of Buddha, like a modern papal crucifix, is added, and the shrine for worship is complete. It has now been adopted in Christian churches and Freemasons' lodges. 

Star of David in a Synagogue predating the expulsion from Spain

The Synagogue of Santa María La Blanca in the old Jewish quarter of Toledo, Spain, was Toledo's oldest and largest synagogue. It was built in the 12th century. Right under the columns there is a geometric latticework forming a Star of David (hard to notice). Style: Mudéjar (Moorish) . The Moors were Muslims who remained in Spain after the Christians overtook the country.

Picture is courtesy of FayeB6 from Flickr.