We have no idea or understanding of triangularity as such, or of what any individual must be like to be a particular triangle, cow, tree, or chair.
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In the first case, it would not be correct to say that A's being a triangle caused it to have three sides, since the relationship between triangularity and three-sidedness is that of definition.
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But on Berkeley's view, just as it is meaningless to speak of triangularity in general aside from specific figures, so it is meaningless to speak of mass in motion without knowing the colour.
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The property of being shaped like a triangle
A triangle is one of the basic shapes of geometry: a polygon with three corners or vertices and three sides or edges which are line segments. A triangle with vertices A, B, and C is denoted .
The state or quality of having the shape of a triangle