Assertion: right triangle's angle | /r/CapableOf | measure 90 degrees
Facets:
Source sentences:
text: A 30-60-90 triangle has angles that measure 30 degrees, 60 degrees, and 90 degrees, and sides facing these angles with lengths in the ratio 1:√3:2, respectively.
text: The right angle represents 90° and the total of all three angles must be 180°.
text: A triangle with all interior angles measuring less than 90° is an acute triangle or acute-angled triangle .
text: A 30-60-90 right triangle (literally pronounced "thirty sixty ninety") is a special type of right triangle where the three angles measure 30 degrees, 60 degrees, and 90 degrees.