三角形
さんかくけい
triangle
Common word
Meanings
Noun, No-adjective
triangle
Example sentences
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Please find the area of the triangle.
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It is hard to define "triangle."
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The sum of the angles of a triangle on a spherical plane is more than 180 degrees.
この構成において、三角形の代わりに長方形を用いても類似の困難が生ずる。
We encounter similar difficulties when we substitute rectangles for triangles in this configuration.
例えば、ペパーバーグは緑色のもくせいの留めくぎと赤色の紙の三角形のような物体を見せる。
For example, Pepperberg would show Alex an object, such as a green wooden peg or a red paper triangle.