How to set out a quadrant without a radius point?
How do you half & quarter to set out a quadrant. I have forgot how to do it.
Answers:
I'm assuming you're talking about cutting a circle into quadrants? This might be the long way to do it, but I would first find the center of the circle. Here's a web page for how to do that:
http://www.makeitsolar.com/science-fair-.
Then you draw your diameter. (there's half)
Finally, find and draw a line perpendicular to your diameter that crosses through the center of the circle.
Like I said - probably the long way to do it, but I'm a very visual person when it comes to geometry. I like to draw everything out.
Draw two chords and bisect each of them. Draw the perpendicular bisectors. Where they cross will be the centre of the circle. Draw a straight line through the centre. You have now divided the circle into two equal halves. Construct and draw the perpendicular bisector of the diameter. You have divided the circle into 4 equal quarters and hence have your quadrants.
Draw a chord. Construct the perpendicular bisector of the chord. This perpendicular bisector will pass through the centre of the circle, so you can use this as on of the 2 lines required to form a quadrant.
Where this line touches the circumference of the circle, again construct the perpendicular bisector of this line and you will have a second diameter that is 90 degrees to the first.
Voila! You have your quadrants.
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Answers:
I'm assuming you're talking about cutting a circle into quadrants? This might be the long way to do it, but I would first find the center of the circle. Here's a web page for how to do that:
http://www.makeitsolar.com/science-fair-.
Then you draw your diameter. (there's half)
Finally, find and draw a line perpendicular to your diameter that crosses through the center of the circle.
Like I said - probably the long way to do it, but I'm a very visual person when it comes to geometry. I like to draw everything out.
Draw two chords and bisect each of them. Draw the perpendicular bisectors. Where they cross will be the centre of the circle. Draw a straight line through the centre. You have now divided the circle into two equal halves. Construct and draw the perpendicular bisector of the diameter. You have divided the circle into 4 equal quarters and hence have your quadrants.
Draw a chord. Construct the perpendicular bisector of the chord. This perpendicular bisector will pass through the centre of the circle, so you can use this as on of the 2 lines required to form a quadrant.
Where this line touches the circumference of the circle, again construct the perpendicular bisector of this line and you will have a second diameter that is 90 degrees to the first.
Voila! You have your quadrants.
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