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Rafa
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How do you fold a piece of paper vertically top to bottom?
First identify which are the long sides. Paper can be held either in portrait or landscape position. In portrait, the longer sides are the sides, and the shorter sides are the top and bottom. In landscape, it is the opposite. Since your question didn't indicate portrait or landscape, I will give the directions for portrait. For landscape, just turn the paper so that the longer sides are top and bottom. For portrait, make sure that the longer sides are at the sides. Now fold the paper so that the longer sides touch, then press the paper to make a crease along the fold. For landscape, fold the paper so that the shorter sides touch, and press the paper to make a crease along the fold.
Is a square symmetrical?
because it has equal sides and you can fold it anyway and it will still have equal sides
What happens to the surface area of a cube if all sides triple?
It increases nine-fold.
What are lines of semmetry?
If you canfold something in half and the two sides are identical then the fold is a line of symmetry. A circle has an infinite lines of symmetry because you can fold it in infinite places and it will always be the same. An oval has two - you can fold it the long way or the short way.
Why does a rhombus only have two lines of symmetry?
Because it only has four sides. So it can only have two lines of symmetry because if you fold it the sides will be the same shape.
