Definitely helpful if you draw a picture first.
First N Perfect Squares
Back to basics 4 - Search Path
Set some matrix elements to zero
Get the elements of diagonal and antidiagonal for any m-by-n matrix
06 - Matrix Equations 1
Find a Pythagorean triple
Is this triangle right-angled?
Area of an equilateral triangle
Area of an Isoceles Triangle
Length of the hypotenuse
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