Q. Which angle is less than 90° ? // Q. An angle of 90° is called ______

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Q. Which angle is less than 90° ?

A) Obtuse angle  B) Straight angle  C) Acute angle  D) Reflex angle

Ans: C) Acute angle

Explanation: An acute angle measures less than 90°.

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Q. An angle of 90° is called ______

A) Acute angle — < 90°  B) Right angle — = 90°  C) Obtuse angle — > 90° and < 180°  D) Straight angle — = 180°

Ans: B) Right angle

Explanation: An angle measuring exactly 90° is called a Right Angle.