Circles: practice and worksheets
Work with circle equations, radius, diameter, circumference, area, arcs, and angle relationships.
Concept overview
Every point on a circle is the same distance from its center. The standard equation (x − h)² + (y − k)² = r² makes the center and radius visible.
Key points
- Use radius, not diameter, in circumference and area formulas.
- Read the center signs carefully from the standard equation.
- Relate central angles to the same fraction of a full 360° circle.
Worked example
The circle (x − 2)² + (y + 1)² = 25 has center (2, −1) and radius 5.
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Questions by difficulty
Circles worksheet practice
Use the printable worksheet for independent practice, then check the answer key and worked explanations.
Frequently asked questions
How should I practice Circles?
Start with foundation questions, check each answer, and move up a level after several correct answers in a row.
How many practice questions are available?
IQClub currently has 100 published questions for this skill.
Can I use this for test preparation?
Yes. The practice reinforces school mathematics and the same reasoning used in high-school tests and entrance exams.