Definition: a flat shape with three straight sides Level: B2
等边三角形有三条相等的边。
An equilateral ___triangle has three equal sides.
花园里有一小片三角形的草地。
There's a small ___triangle of grass in the garden.
这三块石头被排列成三角形。
The three stones were arranged in the shape of a ___triangle.
