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.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 7
Explain the difference between a chord and a diameter of a circle.
If the radius of a circle is tripled, by what factor does the area increase?
What is the formula for the circumference of a circle in terms of its radius r?
What is the name of the line segment that passes through the center of a circle and has its endpoints on the circle?
A circular park has a radius of 21 m. What is its area? (Use π = 3.14)
Which of the following best describes a secant? (1) A line that touches the circle at one point (2) A line that passes through the center (3) A line that intersects the circle at two points (4) A line that is inside the circle
Which of the following is a correct definition of a tangent to a circle? (1) A line that passes through the center (2) A line that touches the circle at exactly one point (3) A line that cuts the circle at two points (4) A line that is inside the circle
Which of the following is NOT a part of a circle? (1) Radius (2) Chord (3) Vertex (4) Diameter
Which of the following is NOT true about a circle? (1) All radii are equal (2) All diameters are equal (3) All chords are equal (4) The center is equidistant from all points on the circle
Which of the following is the correct relationship? (1) Circumference = π × diameter (2) Circumference = π × radius (3) Circumference = 2 × π × radius (4) Both (1) and (3)
Which of the following is true about a tangent to a circle? (1) It passes through the center (2) It touches the circle at two points (3) It touches the circle at exactly one point (4) It is always inside the circle
Which of the following is true about the radius and tangent at the point of contact? (1) They are perpendicular (2) They are parallel (3) They are equal in length (4) They do not intersect
A ________ is a part of the circumference of a circle.
A ________ is a region in a circle bounded by a chord and the arc between the chord’s endpoints.
A chord is a line segment whose endpoints are ________.
A circle is divided into two equal parts by a ________.
True or False: A secant is a line that intersects a circle at exactly one point.
True or False: All chords of a circle pass through the center.
True or False: All diameters of a circle are equal in length.
True or False: The area of a circle increases four times if the radius is doubled.
