This is the well-known broken heart tangram. It is probably related to the square tangram. However, I have not been able to find its original source.
The design is based on a square and two semicircles, which are further dissected into smaller sectors and common shapes. To make the pieces child-friendly, I made each piece a box and added a frame. The labels D30 and D45 in the filenames denote the diameters of the semicircles in millimeters. The D30 version is big enough for classroom use; the D45 is pretty big and tall and can be used as a caddy. If one needs a container to hold the pieces in a heart shape, please try the frame with bottom.
ChaptGPT wrote a poem for it:
Heart shapes here, heart shapes there,
Put them together with some care.
Squares and circles, take a peek,
Together make the heart we seek.
Colorful pieces in your hand,
Fit them right, isn’t it grand?
A heart frame holds them tight,
Puzzle fun from day to night!
| HeartFrameBottom_D30_H16.stl | 544.5KB | |
| HeartFrameBottom_D45.stl | 713.2KB | |
| HeartFrame_D30.stl | 513.3KB | |
| HeartFrame_D45.stl | 675.9KB | |
| Heart_D30_H16.stl | 1.7MB | |
| Heart_D45_H60.stl | 2.9MB |
