Assertion: right triangle's leg | /r/HasProperty | third altitude
Facets:
value: to the hypotenuse
type: LOCATION
value: from the right angle perpendicular
type: MANNER
Source sentences:
text: In the special case of a right triangle, each leg is an altitude perpendicular to the other leg, and there is a third altitude from the right angle perpendicular to the hypotenuse that plays an important role in measurement