alleryStart learning →The corner of a book page measures exactly 90 degrees. What is this angle called?
AAcute angle
BObtuse angle
CRight angle
DStraight angle
Answer & Solution
Correct answer: C. Right angle
An angle of exactly 90 degrees, a quarter turn, is a right angle.
Keep practising Angle
Browse all Angle questions for Olympiad (Class 5), or explore more Mathematics topics.
Related questions
A heptagon has 7 sides. What is the sum of its interior angles?Lines are drawn from one corner of a hexagon to all other corners. Into how many trianglesA right-angled triangle has its two acute angles equal. How large is each one?A triangle has one angle of 100 degrees. What is the sum of its other two angles?Which pair of angles together makes a full angle?Which pair of angles is supplementary?At 4 o'clock the smaller angle between the clock hands is 120 degrees. What is the larger At 4 o'clock the clock hands make a 120 degree angle. What type of angle is it?