Make a two by two grid with six toothpicks, and then place the other two toothpicks at a 45 degree angle on the corner of two of the squares.
You can arrange them to make a cube.12 edges, 6 faces.
A rectangle.. If you combine the triangles to make another square and then place all the squares in a row it makes a rectangle. you can also make a trapezium, if you place the 2 squares next to each other and then the triangles beside them...
no its an emphatic statement all squares can be cut in half to make 2 congruent isosceles right triangles is perhaps as general a statement as is possible
five
Draw a rectangle in the ratio of 1:2 eg sides of 5cm & 10cm. Bisect both the longer sides and join their mid points with a straight line. Draw a diagonal. This gives you 2 squares, 2 big triangles and 2 small triangle (1 in each square)
make a circle
If one of the nine toothpicks is the common base of the two congruent isosceles triangles with sides formed by two toothpicks.
move
You arrange 12 toothpicks into a large square, subdivided into four squares : 2 toothpicks on each side and four more, one each from the middle of the sides to the center of the large square. Now you have four (small) squares. Take away 2 adjacent toothpicks from the ones in the center, and you have 2 squares : one remaining small one and the large one that has the small one inside it. (see related link)
You make 3-D! Look... 6 squares in one cube and you can do that with toothpicks too!
using four of them you make a square then using the remaining two make a criss cross in the middle of the square.
You can arrange them to make a cube.12 edges, 6 faces.
A square has 4 sides therefore 3 squares from 12 toothpicks will simply be three unconnected squares
form triangles side by side
7 squares is forty nine so you remove two toothpicks to make the digits 49
Try using lots of triangles and pyramids, because they are a lot sturdier and stronger than squares and pentagons and hexagons etc. But if you HAVE to use squares, then reinforce the corners by building triangles into them.
Start with a 2x2 square (that uses 8 toothpicks) Use the other two to make a 1x1 square in one of the corners of the big one..