Circle Geometry: Chords, Segments, Arcs, and Sectors

Introduction

• Topic: Understanding parts of a circle
• Key Terms: Chords, Segments, Arcs, and Sectors

Chords

• Definition: A straight line connecting two points on the circumference of a circle
• Impact: Divides the circle into two parts

Segments

• Definition: The parts a circle is divided into by a chord
• Types:
  • Minor Segment: The smaller part of the circle
  • Major Segment: The larger part of the circle

Arcs

• Definition: A section of the circle's circumference
• Identification: Mark two points on the circumference to define an arc
• Types:
  • Minor Arc: The smaller section of the circumference
  • Major Arc: The larger section of the circumference

Sectors

• Definition: A section of a circle, similar to a slice of pizza or cake
• Components: Involves two radii and an arc
• Types:
  • Minor Sector: Bounded by the radii and the minor arc
  • Major Sector: Bounded by the same two radii and the major arc

Summary

• Cutting a Circle:
  • Using a chord results in a minor segment and a major segment
  • Using two radii creates a minor sector and a major sector
• Arc Types Present: In both methods of division, minor and major arcs are formed

Conclusion

• Practice: For additional questions and practice, visit the provided website link.
• Next Steps: Explore more topics in science and math.