Acute Angles: Less 90 degrees but more than 0 degrees.
Obtuse Angles: More than 90 degrees but less than 180 degrees.
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If the other two acute angles are of different sizes then it is an obtuse or a scalene triangle.
A right triangle has one angle a right angle (90o) An obtuse triangle has one angle an obtuse angle (> 90o) An acute triangle has all angles acute (< 90o)
cannot because a triangle has to have 180 degrees i.e. obtuse angled triangle has one obtuse angle acute angled triangle has three acute angles
It can be called obtuse, scalene ( if two acute angles are different ), or isosceles ( if two acute angles are the same ).
-- No right triangle, acute triangle, or equilateral triangle has an obtuse angle in it. -- If a triangle has an obtuse angle in it, then it's called an obtuse triangle. -- No triangle can have more than one obtuse angle in it .