The dissection of the four pieces shown at left into the capital letter "T" shown at right.
T-Puzzle
See also
DissectionExplore with Wolfram|Alpha
References
Pappas, T. "The T Problem." The Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, pp. 35 and 230, 1989.Referenced on Wolfram|Alpha
T-PuzzleCite this as:
Weisstein, Eric W. "T-Puzzle." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/T-Puzzle.html