Drag the seven tangram pieces onto the outline to make the shape. Turn the pieces so that they fit together exactly, with no gaps and no overlaps.
You have covered the shape exactly – no gaps and no overlaps.
Drag the seven tangram pieces onto the grey outline. Click or tap a piece to select it, then use the Turn left and Turn right buttons to rotate it through 45°. The parallelogram can also be turned over with the Flip over button. When the outline is covered exactly, with no gaps and no overlaps, the Claim Your Trophy button will appear.
Keyboard users can press Tab to move between the pieces, the arrow keys to nudge the selected piece, R to turn it and F to flip it over.
As you make each shape you could take a screen grab (use the Snipping Tool in Windows) to keep a record of your work.
The tangram puzzle is believed to have been invented in China and then brought to Europe by trading ships in the early 19th century. It became very popular in Europe during World War 1 and is now one of the most popular dissection puzzles in the world.
Have you tried the Tangram Table activity or T Puzzle yet?
There are solutions to this puzzle but they are only available to those who have a Transum Subscription.
Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.
Drag the shapes onto the canvas to create tessellating patterns then try the tessellations quiz.
The short web address is:
Transum.org/go/?Num=83
Arrange the twelve pentominoes in the outline of a rectangle.
The short web address is:
Transum.org/go/?Num=523
Use the pieces of the T puzzle to fit into the outlines provided. A drag, rotate and drop interactive challenge.
The short web address is:
Transum.org/go/?Num=429
Join up the stars to find the hidden regular polygons.
The short web address is:
Transum.org/go/?Num=431
Use the pieces of the tangram puzzle to make the basic shapes then complete the table showing which shapes are possible.
The short web address is:
Transum.org/go/?Num=413
Arrange the nine pieces of the puzzle on the grid to make different polygons.
The short web address is:
Transum.org/go/?Num=458
More Tangram Maths, Transum
Friday, March 16, 2018
"Write down the mathematical shape names for each of the 7 pieces.
Place the pieces in order of size, with the smallest first.
If a tangram puzzle makes an 8cm by 8cm square, what would be the areas of each of the pieces?
What would be the perimeters of each of the pieces?
What are the angles in each of the pieces?"
Henry Ernest Dudeney, Amusements In Mathematics
Friday, March 16, 2018
"The late Mr. Sam Loyd, of New York, who published a small book of very ingenious designs, possessed the manuscripts of the late Mr. Challenor, who made a long and close study of Tangrams. This gentleman, it is said, records that there were originally seven books of Tangrams, compiled in China two thousand years before the Christian era. These books are so rare that, after forty years' residence in the country, he only succeeded in seeing perfect copies of the first and seventh volumes with fragments of the second. Portions of one of the books, printed in gold leaf upon parchment, were found in Peking by an English soldier and sold for three hundred pounds. A few years ago a little book came into my possession, from the library of the late Lewis Carroll, entitled The Fashionable Chinese Puzzle. It contains three hundred and twenty-three Tangram designs, mostly nondescript geometrical figures, to be constructed from the seven pieces."