acute has a smaller openinig and obtuse has a larger opening A right angle is 90 degrees; an acute angle is less than 90 degrees and an obtuse angle is greater than 90 degrees.
Obtuse angles are angles between 90 and 180 degrees while acute angles are between 0 and 90 degrees!
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They all have different measurements. A right angle is 90 an acute is 89 and down and an obtuse is 91 and up.
An obtuse angle is greater than 90 but less than 180 degrees whereas other angles are acute angle, right angle or reflex angle.
As the angle is between 90 degrees and 180 degrees it is an obtuse angle.
No, an obtuse triangles has one obtuse angle and two acute angles. If a triangle has an obtuse angle, it is considered obtuse and cannot be acute.
An obtuse angle has no complementary angle.