rectangles

The rectangles are aligned with the X and Y axes, so you choose two rows and two columns, giving 17C2x17C2 rectangles in total: 23409 possible rectangles.

How does the ad network confirm the images being served are actually ads and not blank rectangles?

Does that mean that: > Square is a subset of rectangle so >rectangle always results in four right angles given that my only examples of rectangles are squares?

It could only draw rectangles, lines and circles but seeing it actually working was totally amazing.

The number of such rectangles is obtained by choosing two rows and two columns, and so is (17choose2)x(17choose2) = 23409.

It's easy to denigrate little glowing rectangles, but it's easy to denigrate scribbles on sheets of pressed wood pulp too.

He asked how many grids there were, not how many rectangles there were.

But 'rect' for 'rectangle' is not used generally because, outside of some specialized areas, it's quite rare to refer to rectangles at all.

I have click-to-play enabled, so I'm used to seeing small grey rectangles pop up when I hover over things.

Within the 17x17 grid we must avoid X-Y-aligned rectangles with corners all the same color.

As you point out, I computed the number of rectangles that aren't permitted to have all its vertices the same color.

Dirty rectangles are indeed such an optimization, you are right.

If you turn on Quartz Debugging and do things like "show tracking rectangles" X11 windows are a complete unknown to Quartz.

If you turn on "Show Paint Rectangles" you see the entire SVG element is being repainted on every change, including rotating.

Personally I thought the grey rectangles ("click to play" mostly eliminated my need for ad blockers) emphasized the point.

This is just "two rectangles dot ws" for me.