Question

An angle whose measure is less than 90 degree is called (a) An acute angle (b) Right angle (c) An obtuse angle (d) straight angle​

Answer 1

Step-by-step explanation:

An angle whose measure is less than 90 degree is called

:- (a) An acute angle

Answer 2

An angle whose measure is less than 90 degree is called an acute angle. (option a)

• According to the definition of an acute angle, an acute angle has a value that is less than 90°.
• According to the definition of a right angle, a right angle has a value which is equal to 90°.
• According to the definition of an obtuse angle, an obtuse angle has a value that is greater than 90° but less than 180°.
• According to the definition of a straight angle, a straight angle has a value which is equal to 180°.
• So, only the definition of an acute angle satisfies the condition of being less than 90°. Hence, the answer will be acute angle (option a).