A nice visual composition of symmetry.

Evolute of a curve

That's where all of the rest of the light in the universe is supposed to go

Directrix of a Conic

The directrix line of a conic.

Asymptotes of a Hyperbola

Tangent to This Curve

And there we are, I can give them to you.

Evolute of this curve

The line tangent to a curve

That an ellipse is just a squished circle.

Construct a conic with this line as directrix

Tangent to This Conic

Tangent to This Cubic Curve

minutes

feet

nautical miles

light years

milliseconds

Line Edit

Line

line

Lines

Where do they start? There's lines on your hands and lines on your feet. There's lines on the sidewalk and in the street. There's lines on the buildings and on the walls. There's even some lines on a basketball. And not every line happens to be straight. Like the line of potatoes on my diner plate. And what about the lines like the railroad tracks. You mean parallel lines?

One term you are going to hear a lot of in these videos, and in linear algebra in general, is the idea of a linear combination.

The two asymptotes of a hyperbola.

Construct a line perpendicular to this line

The explosion flattened buildings and swept bodies away as well as emitting intense heat and radiation.

So let me draw a line that connects those two.

Go on!

And I have a point outside the line.

This time let's do 97 times 86.

A line constructed through a point, perpendicular to another line or segment.

A line constructed through a point, and parallel to another line or segment

Hyperbola by Asymptotes Point

Parabola by Directrix Focus

Construct a line parallel to this line

Select a line perpendicular to the new line...

Horizontal Lines

Vertical Lines

Normal

Normal

normal

Vertical lines

Horizontal lines