正三角形
(rare) a fourspine sculpin (species Cottus kazika); very similar to the kajika (see below), but larger
gliding
a high school (upper secondary school) with a large portion of graduates entering elite universities; a prep school
(mathematics) equilateral triangle
He drew an equilateral triangle shape.
Sei sankakukei no hen wa onaji nagasa da.The sides of an equilateral triangle are the same length.
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