There is no requirement in Catholicism for an altar to face any specific direction.
Roman Catholic AnswerFor a complete discussion of this "facing East", you need to pick up the Pope's book, The Spirit of the Liturgy by Joseph Cardinal Ratzinger (now Pope Benedict). The idea comes from the Jewish idea of facing towards where our salvation came from, towards the rising sun, towards the East. For centuries, Churches were faced (if possible) towards the East - from where our salvation came, with the altar on the east end with the priest and the people both facing the same way. This is known now as "liturgical East" as it doesn't have to be necessarily towards the rising sun "east". As pointed out above, there is no requirement for this, it is just a very old custom.This is a throwback to when the oldest Church of England churches (ie those dating before the reformation) were originally Roman Catholic churches. Roman Catholics are far more symbolic that protestants, and believe that the Second Coming of Jesus will happen in the East. Therefore Catholics looked to the east for the second coming of Christ, and therefore, by tradition, wanted to look east during the mass, which takes place at the altar.
More modern churches have usually followed the tradition, and the communion table (the protestant equivalent of 'altar') is built at the east end. However, many new churches abandon the tradition as it is not scriptural anyway, and place the altar/communion table wherever they like. In my own church as an example, the table is actually at the west end as architecturally this was the best place, and we have another table that we move - sometimes into the centre of the church.
The tradition is that the people face east, the direction of sunrise/first light, as a symbol of resurrection.
No, the altar linen must always be white. Violet can be used for hangings on the front of the altar or sides, but the top cloth must always be white linen.
An antependium is a screen in front of an altar, or an altar cloth.
In front!!
It is the front surface the altar.
No, it is not always capitalised.
Often, a banner matching priest vestment color is in front of altar, the color being associated with the church time, like purple as it is in Lent. It does not always match; if priest is doing funeral he will wear white but the altar may still be purple.
at the front of the church normally in front of an cross
It's at the front.
Choir or transept.
A catholic altar is mainly used for the Holy sacrifice in mass.Also used to glofiry god holy word.Its used for celebration and thanksgiving.It used for prasing the lord God almighty,the creator of heaven and earth.
in front of the congregation, so everyone can see whats going on over there
It is the table at the front of the church, usually made of wood or marble. It is where the Eucharist is celebrated.