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Preview questions
1. What is the relationship between the radius and diameter of a circle?
Radius is half of the diameter · Diameter is half of the radius · Radius is equal to the diameter · Radius and diameter are not related
2. If the radius of a circle is doubled, how does the area change?
It remains the same · It doubles · It quadruples · It increases by a factor of three
3. What is the formula for the circumference of a circle?
πr² · 2πr · πd · Both 2πr and πd
4. A chord that passes through the center of a circle is called what?
Diameter · Radius · Secant · Tangent
5. What is the angle subtended by a diameter at any point on the circle?
90 degrees · 180 degrees · 360 degrees · 0 degrees
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