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# Fill in the blanks with acute, obtuse, right or straight :

**(a)** An angle whose measure is less than that of a right angle is _____

**(b)** An angle whose measure is greater than that of a right angle is_____

**(c)** An angle whose measure is the sum of the measures of two right angles is_____

**(d)** When the sum of the measures of two angles is that of a right angle, then each one of them is_____

**(e)** When the sum of the measures of two angles is that of a straight angle and if one of them is acute then the other should be_____

To do:

We have to fill in the blanks.

Solution:

(a) An angle whose measure is less than that of a right angle is **an acute angle.**

(b) An angle whose measure is greater than that of a right angle is **an obtuse angle.**

(c) An angle whose measure is the sum of the measures of two right angles is **a straight angle.**

(d) When the sum of the measures of two angles is that of a right angle, then each one of them is **an acute angle.**

(e) When the sum of the measures of two angles is that of a straight angle and if one of them is acute then the other should be **an obtuse angle.**

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