Assertion: right triangle's angle | /r/CapableOf | form square
Facets:
value: with the angle in the diagram
type: OTHER
Source sentences:
text: In diagrams, the fact that an angle is a right angle is usually expressed by adding a small right angle that forms a square with the angle in the diagram, as seen in the diagram of a right triangle (in British English, a right-angled triangle) to the right.