Take a line, a straight line, And divide it into three. Make the three lines form three angles, And a triangle have we. Now take this little triangle And twirl it about in space. Twirl the...
The special triangle
Thousands of years ago, in ancient Egypt, there were men known as "rope-stretchers." It was their job to mark out the boundaries of fields and the foundations for houses, temples, and palaces. The...
Triangle tricks
Triangles are tricky shapes. You can do some surprising things with them. Let's make a triangle that you can do some tricks with. You'll need a piece of paper about the size of this book, and a...
A triangular tale
A triangle called Isosceles, And his friend who was known as Obtuse, Were arguing over the very best way To cook a Christmas goose. "Let's bake it," the Obtuse one said, "In an open fireplace,...
Meet the triangle family
Every angle has one side that is open. If you close this open side, you'll have a closed shape with three straight sides and three angles. A shape of this kind is called a triangle ang guhl)....
Points, lines, shapes, and designs
Start with two points. Connect them with a line. Then make an angle (You're doing fine). Close the angle And a triangle's there. Put two triangles together ---You've got a square! And squares and...
Six
> Long ago, the Greeks discovered something very odd about six. It can > be divided evenly by three numbers that are less than itself---one, > two, and three. And, these three numbers add up to six!...
Three
If you think of three as three dots, you can show it as a triangle. A triangle is a shape with three sides and three angles, or corners. That's how the ancient Greeks thought of three. The Greeks...
Stars and snowflakes
Materials - paper (large sheets) - scissors 1. Square your paper (see square, page 38). Cut off the rectangle, but leave the paper folded so that it is a triangle. Fold the triangle in half, as...
