Please Help.
What is a transformation?
What are the different types of transformations?
What is a tessellation?
Why did we have to make a tessellation?What does it have to do with transformations?

Question

Please Help.
What is a transformation?
What are the different types of transformations?
What is a tessellation?
Why did we have to make a tessellation?What does it have to do with transformations?

triciaal · Answer

paraphrased 

basically a transformation is a movement from one location to another 
main types
glide--  just a shift --  so many units east or west as in left or right  and so many units up or down  plus or minus respectively 
reflection across y axis like looking in a mirror    x go to -x,  y stays the same
reflection across x-axis like looking in a river   y go to -y and x stays the same
rotation -turn forming an angle    go so many degrees clockwise or anticlockwise  each original point will move through the same angle to get to the new location  can be about a point or about a line 
dilation  reduce or enlarge  change size by a certain factor  each side of the figure will change by the same factor

triciaal · Answer

I got this one from the internet  (cannot remember everything)
What are tessellations? Basically, a tessellation is a way to tile a floor (that goes on forever) with shapes so that there is no overlapping and no gaps.