1.
triangle
A geometric shape with three sides and three angles.
三角形 is a mathematical term for triangle.
TYPES OF TRIANGLES:
- 正三角形: equilateral triangle
- 二等辺三角形: isoceles triangle
- 直角三角形: right triangle
RELATED TERMS:
- 四角形: quadrilateral, rectangle
- 円: circle
- 三角: triangle (informal), triangular