You can't move the needle. Nor can you change the radius.
2006-10-09 18:24:33 · 9 answers · asked by govi 2 in Science & Mathematics ➔ Mathematics
If you roll the paper around a cylinder, like a pipe, and then use the compass while the paper is wrapped around the pipe, then the resulting curve on the paper after you unwrap it will be an ellipse, or oval, that is not a circle.
The reason is because the compass can reach farther on the paper when the paper is "bent" around the pipe.
2006-10-09 21:40:12 · answer #1 · answered by vinzklorthos 2 · 4⤊ 0⤋
Put the compass needle on one point and the writing point on another. Hold the compass in this position all throughout. Now take a string that is more than thrice the length of the distance between the points of the compass (in position). Tie the ends of the string together (to form a loop). Now take the loop and put it through the compass, stretch the loop with a pencil and trace the path that the pencil takes. The resulting curve is an ellipse/oval.
^_^
2006-10-09 23:41:40 · answer #2 · answered by kevin! 5 · 1⤊ 0⤋
Sort of. One way to accomplish this is to place two pins in your drawing surface a little closer together than you want your oval. Take a piece of string that is 20-50% longer than the distance between the pins and tie each end to a pin. Then take your pencil and at any point pull the string taught with your pencil point. Now keeping the string tight, move your pencil around the two pins - the string will keep the pencil arcing in an oval.
2016-03-28 03:24:35 · answer #3 · answered by Anonymous · 0⤊ 0⤋
draw one big half circle, above it one small half circle, the open sides of the circles shoul look to each other. Next connect the sides of the smaal circle with the big circle, the lines shoul not cross. What you see now is an oval.
Kevin an ellipse is NOT an oval !
2006-10-10 00:40:23 · answer #4 · answered by gjmb1960 7 · 0⤊ 0⤋
you can't. if you push two pins into a board, put a loop of string around them, put your pencil in the loop, pull the string taut, and draw all the way around, you can. move the pins to adjust the eccentricity of the oval. um, not like you actually want to do this.
2006-10-09 18:35:27 · answer #5 · answered by lb 3 · 0⤊ 0⤋
It's impossible. If the radius is the same, it is always a circle.
2006-10-09 18:30:28 · answer #6 · answered by Anonymous · 0⤊ 0⤋
draw a circle on a rubber sheet and then stretch the rubber sheet.
2006-10-09 23:24:42 · answer #7 · answered by Anonymous · 1⤊ 0⤋
with projection of isometric and dimetric
ask engineer close to u or drawer. actually i've learn it. but i can teach it. because need time need to draw
2006-10-09 18:30:02 · answer #8 · answered by richi rasyid 4 · 0⤊ 0⤋
you cannot
instead try using french curves
2006-10-09 18:27:08 · answer #9 · answered by raj 7 · 0⤊ 0⤋