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Classify each one of the following angles as right, straight, acute, obtuse or reflex:
We have to classify the given angles as right, straight, acute, obtuse or reflex.
(a) The given angle is less than $90^o$.
Therefore, it is an acute angle.
(b) The given angle is more than $90^o$ but less than $180^o$
Therefore, it is an obtuse angle.
(c) The given angle is equal to $90^o$
Therefore, it is a right angle.
(d) The given angle is more than $180^o$ but less than $360^o$
Therefore, it is a reflex angle.
(e) The given angle is equal to $180^o$
Therefore, it is a straight angle.
(f) The given angles are less than $90^o$.
Therefore, they are acute angles.
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