According to legend,an Irish man named Jack was so miserly
during his life that neither Heaven nor Hell would accept him after he died.
s a result, he had to hollow out a turnip and place some coals inside to light his way...

Later generations imitated him by hollowing out turnips and placing candles inside.In the 1840s, European immigrants to America discovered a better material: "pumpkin."

Today, let's make a flat Jack-o'-lantern decoration!
Use 18 large triangular pieces to create a symmetrical pumpkin head.
The mischievous expression can be gradually constructed using "right triangles" and "small triangles."

A decoration like this can be supported by placing a "right triangle" or "square" on the back, allowing the piece to stand up!