Assertion: kaleidoscope's mirror | /r/HasProperty | arranged in triangle
Facets:
Source sentences:
text: The kaleidoscope has three mirrors (shown in light blue) arranged in a triangle, running the length of the tube (shown in brown).
text: The kaleidoscope has three mirrors (shown in light blue) arranged in a triangle, running the length of the tube (shown in brown).
text: Three-mirror systems have, as you would guess, three mirrors, which are arranged in a triangle.