The Christian Reformed Church in North America has around 1,000 congregations across the United States and Canada, with outreach missions around the world.
Although their emblem is simply a cross and a triangle, the meaning is quite profound. The cross symbolizes their belief in Jesus Christ's sacrificial death for our salvation and the triangle symbolizes the Church's belief in the Trinity. (Source: www.crcna.org)
For those interested in numerical significances, 'three' also happens to correspond with the number of creeds, their basic tenets of faith: the Apostles' Creed, the Nicene Creed, and the Athanasian Creed.