| 释义 |
三角形sānjiǎoxíng平面上三条直线或球面上三条弧线所围成的图形。三条直线所围成的图形叫平面三角形;三条弧线所围成的图形叫球面三角形。{triangle; three-sided polygon; figure having three sides that are either three different straight lines (known as ‘plane triangle’) or three arcs on a spherical surface (known as spherical triangle);}也叫also三边形{sānbiānxíng}。 |