Assertion: triangle's angle | /r/HasProperty | right
Facets:
Source sentences:
text: Since a right-angled triangle has one right angle, the other two angles are acute.
text: Thales' theorem implies that if the circumcenter is located on a side of the triangle, then the opposite angle is a right one.
text: right triangle - has one right angle (a right angle = 90°)
text: The right angled triangle contains a right angle (an angle of 90˚)
text: The right-angled triangle contains a right angle (an angle of 90˚)
text: Isosceles Triangle Has a right angle (90°), and also two equal angles
text: Since a triangle is obtuse or right if and only if one of its angles is obtuse or right, respectively, an isosceles triangle is obtuse, right or acute if and only if its apex angle is respectively obtuse, right or acute.
text: An alternative proof (also based upon the triangle postulate) proceeds by considering three positions for point B: (i) as depicted (which is to be proven), or (ii) B coincident with D (which would mean the isosceles triangle had two right angles as base angles plus the vertex angle γ, which would violate the triangle postulate), or lastly, (iii) B interior to the right triangle between points A and D (in which case angle ABC is an exterior angle of a right triangle BDC and therefore larger than π/2, meaning the other base angle of the isosceles triangle also is greater than π/2 and their sum exceeds π in violation of the triangle postulate).
text: An acute triangle has all interior angles acute (less than 90°), a right triangle has one right angle (equal to 90°) and an obtuse triangle has one obtuse angle (greater than 90°).
text: right triangle - has one right angle (a right angle = 90°)
text: The right triangle is the triangle that has a right angle which has a measure of 90 degrees and two angles that are acute, which means that they measure less than ninety degrees.
text: A right triangle is any triangle with one angle that is a right angle.
text: if a triangle has a right angle, that is, if one of the angles of that triangle measures 90° (90 degrees), then we have a right triangle .
text: Can triangle have two right angles?
text: Can triangle have two right angles?
text: Right (one angle is right)
text: (one angle is right)
text: Cathetus : are the sides of the triangle that together form the right angle .