Questions and Answers
What is the term for the distance around a circle?
What is a chord that passes through the center of a circle?
What is the term for a section of a circle?
What is the relationship between the radius and diameter of a circle?
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What is the line that touches a circle but is drawn outside of it?
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What is formed when two radii connect to an arc?
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What is the part formed when a chord connects with an arc?
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What is an example of a circle in everyday life?
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What is the term for more than one radius?
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What is the shape formed by the strings of a guitar?
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Study Notes
Everyday Circles
- Circles are ubiquitous and special shapes that can be found in everyday objects such as bowls, plates, soda cans, and wristwatches.
Circumference and Arc
- The circumference of a circle is the distance around the shape, represented by the red part of the plate.
- An arc is a small section of the circumference.
Measuring Circles
- A chord is a straight line that connects two parts of a circle.
- A diameter is a special chord that passes through the center of the circle.
- The radius is half the distance of the diameter and can be drawn vertically, horizontally, or diagonally.
Outside & Sections of Circles
- A tangent is a line that touches the circle but is drawn outside of it.
- When two radii connect to an arc, they form a sector, which resembles a slice of pizza.
- The radii are the straight edges, and the curved part is the arc.
- A segment is formed when a chord connects with an arc, as seen in the guitar strings crossing through the circle.
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Description
Explore the concept of circles in everyday objects, including circumference, arcs, and measuring techniques. Learn about chords and diameters in this interactive quiz.
