a reflex angle
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An angle of 315 degrees is a reflex angle
A 90 degree angle is a right angle
A 45-degree angle is an acute angle
If the triangle has a 30 degree angle and a 60 degree angle then the 3rd angle must be a 90 degree angle because there are 180 degrees in a triangle and so therefore it is a right angle triangle.
An angle greater than 90 degree is an obtuse angle.