“三角形”用英语怎么说

三角形内角总和为180度。The sum of all the angles of a triangle is 180 degrees.桌上有一只用珠子串成的小三角形作装饰的盒子。On the table sat a box decorated with little pearl triangles.这一设计由淡色的3个长方形和3个三角形构成。This design is in pastel colours with three rec...

“三角形”的拼音为：sān jiǎo xíng...