In mathematics, acute, obtuse and reflex are all types of what?
Acute and obtuse triangles 5). The two oblique Heron triangles that share the smallest area are the acute one with sides (6, 5, 5) and the obtuse one with sides (8, 5, 5), the area of each being 12. Acute and obtuse triangles An acute triangle is a triangle with all three angles acute (less than 90°). An obtuse triangle is one with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180°, no triangle can have more than one obtuse angle. Acute and obtuse triangles are the two different types of oblique triangles—triangles that are
Acute and obtuse triangles obtuse triangle. For an acute triangle with semiperimeter "s", and the reverse inequality holds for an obtuse triangle. For an acute triangle with area "K", For an acute triangle the distance between the circumcenter "O" and the orthocenter "H" satisfies with the opposite inequality holding for an obtuse triangle. For an acute triangle the distance between the incircle center "I" and orthocenter "H" satisfies where "r" is the inradius, with the reverse inequality for an obtuse triangle. If one of the inscribed squares of an acute triangle has side length "x" and another has side length "x" with "x" <