A triangle is used as a container to hold a force, entity or spirit. You could for example have a triangle within a circle, and using the power of the circle and other techniques call an entity to attend, and hold it within the triangle. You have to be careful that the entity cannot cover the triangle or any part of it, and there are cases we have heard of where a circle and triangle within was cast on a beach, using lines in the sand and the entity was able to throw sand around and escape.
The other type of water witches are known to have performed most of their magic, using a grid of squares, and to have called forth an entity, which appeared in the central square, this was seen by all present and was then given a task to perform, and allowed to escape to perform it. The reports however may be inaccurate as a stick was thrown to allow it to escape suggesting that there may have been a triangle in the center not seen by observers, and the thrown stick disturbed this. It is clear from reports that the entity could not leave until given instructions and a stick was thrown.
As a beginner, we would suggest you do not experiment in calling up entities. They will not harm you, and will dissipate fairly quickly (disappear), or escape. but you may experience damage to property and it can be quite frightening if you are not totally confident that you are in control.
No witch would call any entity to appear in a circle without first telling everyone what was going to happen and given anyone who wished the chance to leave. Some people find such things rather frightening, especially when the entities moves closer and stairs at you. You can only communicate with entities by telepathy, but within rituals it is common for the person in charge to do so but also to give it instructions out loud. The most common entities called up by water witches are large black cat like creatures, which have often been seen by others as well, but never kills any creature or are seen again in the area again. Try if you can not to allow any entity you call to be seen by others as it both will draw attention to you and may frighten some people.
We have not within this page given you sufficient information to call forth enteritis. Clearly this knowledge in the wrong hands could get out of hand.
Nothing can be done using a spell with an entity that cannot be done by using water. The only reason we will sometimes use an entity is that the entity can be given the task of delivering the spell, and is a very much faster mans than water dispersal. Some other paths use entities far more.