Question

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) Anangle whose measure is greater than that of a right angle is _______.

(c) An angle whose measure is the sum of the measures of two rightangles is _______.

(d) When the sum of the measures of two angles is that of a rightangle, then each one of them is _______.

(e) When the sum of the measures of two angles is that of a straightangle, and if one of them is acute then the other should be _______.

Answer 1

(a) Acuteangle

(b) Obtuseangle (if the angle is less than 180º)

(c) Straightangle

(d) Acuteangle

(e) Obtuseangle