3-D objects!?!?!?

Question

If you rotate a rectangle what 3-d object do you get? If you translate a rectangle what 3-d object do you get? If you rotate a circle what 3-d do you get? If you translate a circle what 3-d do you get? If you rotate a triangle what 3-d object do you get? If you translate a triangle what 3-d object do you get? Please help me. I need it fast!

Answer 1

First, understand what "rotate" and "translate" mean.

Think of rotating a shape as taping a pencil to a piece of paper right along the center of the shape. Then, twirl the pencil and look at the shape that's made.

Rotating a rectangle will give you either a cylinder (if rotated through its LONG axis) or a disc (if rotated through its SHORT axis).

Actually, a disc is a type of cylinder just like a rectangle is a type of quadrilateral.

Rotating a circle will give you a sphere, and rotating a triangle will give you a cone.

Translating means to take an object and move its position relative to its original position. Think of this as "sliding" the shape, or just think of making two pieces of paper the same shape, and connecting the corners (or anywhere on the circle) with pieces of string.

If you translate a rectangle, you will get a rectangular prism (and if the rectangle is a square, you will get a cube). If you translate a circle, you will get a disc or a cylinder (as before with the rotated rectangle), and if you translate the triangle, you will get a triangular prism.

I hope this was helpful.