Thank you. At 70 years old, I have learned something new.

Can someone please tell me this... Why don't they teach usefully things like this in school...as opposed to the things which totally confused the hell outta most folk and would never use again once we leave full-time education. An excellent video...simple, straightforward and to the point, no messing around. Thank you for making and sharing this video. ❤❤😊😊

Very cool! I need to do exactly that--find the center of a circle. It's for a holder for a circular light. I traced the outside of the lamp but want to mount it from the center and you've saved the day. Thank you

Very helpful, clear directions. Thank you

Without measuring tools, if tracing circle on paper: cut the circle out, fold in half, then fold in half the other way, the middle is where the folds meet.

Great tip. Thanks a lot!

Actually, if you already have a compass, you do not need the square to find center. Search KZfaq to find out how. But the real reason I am posting is to say I would check my accuracy by simply drawing a couple more chords and follow her procedure. All the lines should meet in the center. Then you know for sure you got it right.

Thank you so much! Very simple. You rock!

This was awesome! Thanks! 👍🏻

Great tip! Thanks a lot! 👍👍👌

Nice technique. Thanks for this video 👍

Awesome! Today I learned something new. Thanks for sharing.

Its nice and easy, many ways to get around it, but makes it fun.

Excellent & Easy way to find out the Centre of any Circle.

Love it, thank you.

Excellent. Thank you.

Nice method!

Thanks! You learn something new every day.... :)

Brilliant!!!☘

Thank you very much, that was a blessing.

Thanks I was just wondering how to do this yesterday and TA DA !, there you are- reading my mind.

Briliant❤. Thank you.

thank you nicely explained

🌹 Nice video! 🖌️🎨

Thank you!!

You are wuuuuuuuunderful!❤

And just like that, I learned another thing I wish I knew 20+ years ago... Thank you!

The ways are endless and simple.

Thank you for sharing.

Math is wonderful, useful and everywhere!

Thank you!

Thank you very much.

Thank you ! 👍🙏

Nice, thanks for sharing

Thanks!

Nice job 👍

I just did it on a round metal polish container cap just to test it out. It worked correctly and was easy. I think I'll be able to remember how to do it later on without looking up the instructions again.

Thanks for the easy and clear example. Appreciate it!

I've just looked at the centre of circles before and pin-pointed it by eyesight. Like when I shoot instinctively and hit my target.❤

Thank you so much and to think it was there all the time what am I like thaking you once more.

SURE WOULD HAVE BEEN NICE TO HAVE YOU FOR A TEACHER WHEN I WAS IN HIGH SCHOOL....🎉🎉🎉🎉 Watching from Houston, TX.🇨🇱🤠

Very thanks❤

you can do the same with the devider or compas

Nice!!

There's an easier way, using the same tools, that requires no measuring. Any right angle triangle, with all three corners touching a circle, will have a hypotenuse that perfectly divides that circle. Put the corner of the square on the circle, just like you did in the video, but instead of drawing chords, just mark the two points where the legs of the square intersect the circle. Those two points will be exactly opposite one another regardless of the size of the circle or the orientation of the square. Draw a line between those two points. Turn the square roughly 90 degrees, for a clearer intersection, and repeat the process. The point where those two lines intersect will be the center point of the circle.

Thank you.

Very intuitive trick. Just seeing and reading your thumbnail I was able to deduce how to do it. I watched the video for verification. Additionally, this is very rememberable in its simplicity.

Found your video today, thank you for helping me find the center of a circle for my project!!!!

This is a good one and pretty simple. Is there some simple method to find the largest circle (and center i guess too) that will fit inside an irregular boundary shape ? For instance, a slab of wood cut diagonally from a tree whose sides were very wavy, eg not round - like almost star-like with bulges etc.

This makes it easier than all the other laborious task arriving at near the same answer.

I was having a crap day and saw your smiling face and it made me feel better so thanks 2 times

This is handy for small circles.

Wow!

Thanks

This is easy way but there is even easier one 😃. When you drew first chord you should have drawn the chord created by the other side of the square. Two end points are on the diameter of the circle and splitting it in half and you are done. This is due to the fact that any inscribed triangle intercepting diameter is right triangle. Thanks for sharing.

Hi Thank You 😊😊😊

Ty ma' am🙂

This a very handy tip! Thanks!

Seen so many of these videos where "content creators" copy each other without thinking. Dude, place the top of the right angle tool anywhere on the circle, like you did. The two points where the angle arms intersect the circle form a diameter - connect them. Repeat it from a different starting point. The intersection of the two diameters is your centre of the circle. Basic geometry.

Just use that protractor, set it to swing a arc off from circle over center. Swing 4 small opposing arcs, then with a straight edge draw two lines thru the arc intersections.

I often need to find the center of a log, which is never a perfect circle. In which case, log horizontal and chocked to prevent rolling, measure top to bottom, divide and mark, side to side, divide and mark, then use a torpedo level to draw horizontal line and vertical line. Center is where those intersect. When done on both ends, I now have four points to join lengthwise with a chalk line, dividing the log into lineal quadrants, and now I have the basis of a 'map' that I can use to create any shape I need.

Compass, pencil and I’m already drinking beer while you fiddle with square and pencil drawing lines.

Draw a square round it … draw diagonal intersection lines … job done.

You can also just set the compass at half the measured diameter of the circle and then draw two or three arcs with the pin of the compass on several poits along the circle. Where the arcs cross, that the center.

I like using a compass for this chore.

I like to use my high powered rifle. I always find the center. :)

If you have a compass just use that to cross the circle at three places, job done.

you can do this without any measuring by using a compass to locate the midpoint of the chord.

I love it. But I won't remember it the next time I need it, which seems like too often only because it's so frustrating not knowing how.

I like that

That's one way I suppose, but if you have a compass, just set it as close to half of the diameter of the circle and make a series of pencil marks from the outside line to the centre. Way quicker.

Since you have a protractor and a straight edge, you can simply measure the diameter of the circle by dragging the straight edge across the circle until it is widest. Mark the intersection of your straight edge and the perimeter. Measure this line and divide by 2. That is your center. To double check, set your protactor to the radius, with the pin on the exterio point and draw an arc. Set your pin on a random point on the perimeter and draw an arc through the center. They should both cross at the center. You can do this as many times as you want. If you end up crossing at a point other than center, you are off. You could also simply do the fist step several times. It should cross at the center.

Great video thanks

I learned in drafting class how to find center with a compass and right angle triangle

I use the small protractor hole to find the center of a circle I just made.

👏👏👏👏

super helpful! thank you!

Top noch👍

Two parallel chords, equidistant from the circumference, the diagonals from each cord intersect at the centre of the circle.

That was very good. Thank

So cool. Geometry - maths without numbers. You can't get any better than this folks.

I like two arcs and a bisecting line

Very good. I can find the center with a dart.

Gotta love that accent.

Very cool!!!

Isn’t there a way to find the centre with dangling string? I remember doing it but can’t remember

👍

Draw one with a compass and where the pinhole is...thats the centre😁👍

🤔 Since you have a set square, wouldn't this be easier → position the inside corner on the circle and mark where the arms cross the circle (no measuring needed), joining these marks gives a diameter. Do it again to get another diameter crossing the first, and where the diameters cross is the centre. This is based on the rule that all inscribed right triangles lie on the diameter of the circle.

I prefer using a compass set to the radius dimension (1/2 the diameter) to find the center.

I’m having flashbacks to high school trigonometry. Oh the headache.

Love your accent - I've seen a few ways to do this, but this is the easiest. Thanks.

Prince Harry landed in the center of a dog bowl thanks to a body slam from Prince Willy !!!!

Simpler, just measure across the circle and find the largest measurement, mark the outside of the circle where you made that measurement and draw a line across, bisect that line and there is your centre point, dead accurate and so easy without trying to be another Pythagorus.

Interesante.

This is like going to china to get across the street.

The intersection of the perpendicular bisectors of any 2 chords of a circle is the center of that circle. H.S. geometry, Miss Kominski, 1949.

There's an easier way than that. Put the corner of the framing square anywhere on the edge of the circle. Mark where the legs of the square cross the circle. Draw a line between those two points. Move the square to a different point on the circle and do it again. Where the two lines cross is the center.

Every time you put the ruler on the screen, in addition to the eye error, another error is added to your errors. I think this method is harder than the other methods 😂

Very good idea when all you have is a square. I suggest doing at least three lines. Two lines will always intersect, no matter how innacurately you drew the lines, a third line will tell you how accurate you were (if they all intersect at the same point you know you were spot on). Similarly, you can be quite imprecise in drawing the lines, but draw as many lines as you want, and you will make a spot in the middle where all lines missed (because every line was slightly off centre), and this is the true centre. Only need a few lines to get a very close estimate of the exact centre.