# SolveMyMaths Action 4!

Creation of this applet was inspired by a tweet from Ed Southall.
Feel free to move any one (or more) of the white points.
You can adjust the sizes of the squares using the sliders.

**How does this applet informally illustrate that the areas of the 2 green triangles are equal?****How can you formally prove what this applet informally illustrates?**## New Resources

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