Summary

This is a Mesuribul (משוריבול).
It's a circle. It's a triangle. It's a square. It all depends on your point of view.

You can watch a very old educational video (in Hebrew) featuring the Meshuribul (משוריבול) :
https://youtu.be/lgZtuGgAZvo?t=1175

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.16</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>10%</p></div></p>                                                    <strong>Filament:</strong> Spider3D PLA