Geometric illusions using Grids
When working with a lot of geometric shapes or objects of predetermined sizes and positions, it is useful to use a grid to make drawing and positioning easier.
In this recipe, we will recreate a famous geometric illusion: Curry's Missing Square Puzzle, also known as Curry's paradox.
In Curry's paradox, a right triangle is divided into several shapes, and those shapes are then rearranged to again form a right rectangle of seemingly the equal surface, but something doesn't add up!
Where did that extra square come from? We will investigate and solve the mystery in this recipe.
How to do it...
The following recipe will illustrate the use of grids:
1. In the Document Properties (Shift + Ctrl + D) under the Grid tab, create a new rectangular grid by hitting the New button. Change the Spacing X: and Spacing Y: from the default 1 to 50 and close the Document Properties dialog:
2. Select the Pen tool (Shift + F6 or B) and, on the toolbar, set the Mode: to Create a sequence...
