Circles
Math ⇒ Geometry
Circles starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Circles.
How you perform is determined by your score and the time you take.
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See sample questions for grade 12
A chord of a circle is 12 cm long and is at a distance of 5 cm from the center. What is the radius of the circle?
Explain the concept of a cyclic quadrilateral and state one of its key properties.
Explain the difference between a secant and a chord of a circle.
If the circumference of a circle is 44 cm, what is its radius? (Use \pi = \frac{22}{7})
If the length of a chord is equal to the radius of the circle, what is the angle subtended by the chord at the center?
If two circles of radii 5 cm and 3 cm have their centers 8 cm apart, what is the length of their common external tangent?
State and prove the theorem: 'The tangents drawn from an external point to a circle are equal in length.'
State the converse of the theorem: 'The angle in a semicircle is a right angle.'
