# A tangent, a line & a circle, another Math-Poem

by | Wednesday, January 13, 2010

A tangent, a line and a circle
A math poem

Image credit: chrstphre (on Flickr)

A point outside a circle,
shoots out two lines
the other more feline
smoothly kisses the curve
That delicate swerve
of the ball and then, abruptly
turns to the center,
making an angle
and meets the first
which went on straight
To thus form a triangle.

The angle formed by the tangent
And the other line, the radius
the mathematical mind sees
is exactly 90 degrees!

And funnily enough, it doesn’t matter
where the initial point is, the starter
Where ever it may be
(as long as it is outside the circumference)
The angle will always be 90!
Did that make sense?

A poem on the fact that a tangent to a circle is perpendicular to the radius drawn to the point of tangency. See image below

Image from ETC, an online service of Florida’s Educational Technology Clearinghouse

Topics related to this post: Art | Creativity | Fun | Mathematics | Personal | Poetry | Representation | Worth Reading

A few randomly selected blog posts…

## Seeing differently (veja du with video)

I am always looking for examples of looking at the world differently - of making the familiar strange and the strange familiar. This is of course connected with the veja du assignments I give my students. I just came across a couple of very interesting video examples...

## New Orleans, here we come…

Matt and I will be at New Orleans next week for the AACTE Annual Conference. The last time I went to New Orleans must have been in 2000 or 2001... so I am looking forward to going there. There are three specific things we will be involved with. Meeting of the AACTE's...

## Good teaching is good design

I just came across Dieter Rams: ten principles for good design and was immediately struck by how closely they paralleled what is essential for good teaching. All one has to do is replace the word "design" with "teaching" and I think we get 10 pretty...

## Distributed creativity

Re-Public: re•imagining democracy, an online journal focusing on innovative developments in contemporary political theory and practice, has a special issue devoted to Distributed Creativity and Design. This may be a useful resource for my Learning technology by design...

## Happy 2009, a stop motion movie

Soham, Shreya and I spent this afternoon making a stop-motion animation new year's card. Check it out... http://www.youtube.com/embed/7kw_icNKI44 Have a great 2009!

To view this protected post, enter the password below:

## Computational Thinking paper wins Outstanding Paper

A paper co-authored with Jon Good and Aman Yadav, building on Jon's practicum study has received the Outstanding Paper Award at the SITE 2017. Complete reference, link to article and abstract given below. Good. J., Yadav. A., & Mishra, P....

## 2001, 40 years after

Musings on local newspaper headlines, 2001 A Space Odyssey, media and creativity, and ending with some thoughts on the meaning of life... a lot to fit into one blog post but again I had the weekend to work on this. I read our local newspaper, the Lansing State Journal...

## We feel fine

We Feel Fine is a web-installation, "a self-organizing particle system," art project that is powerful and touching - building as it does on people's emotions, harvested from blog postings from around the world. As the designers say, "We hope it makes the world seem a...

# 1 Comment

1. Thanks for sharing. This is a super useful post