Exploring the Parts of a Circle

The video tutorial introduces the topic of circle geometry, focusing on identifying parts of a circle such as the radius, diameter, center, circumference, and sector. It explains the relationship between the circumference, radius, and diameter, and provides definitions and diagrams for better understanding. The tutorial includes formulas for calculating the radius and diameter, along with examples. Students are encouraged to pause the video to reflect on questions and complete an assignment by drawing a table and sending their work to the teacher.

Which of the following is NOT a part of a circle?

• Radius

• Diameter

• Circumference

• Vertex

What is the term used to describe the distance from the center of a circle to any point on its edge?

• Diameter

• Circumference

• Radius

• Sector

Which line segment has endpoints that both lie on the circle?

• Chord

• Diameter

• Radius

• Sector

What is the diameter of a circle if the radius is known to be 10 units?

• 5 units

• 20 units

• 10 units

• 15 units

What is the perimeter-like measurement around the circle called?

• Radius

• Arc

• Diameter

• Circumference

What part of the circle is shaped like a pie and is enclosed by two radii?

• Circumference

• Sector

• Chord

• Diameter

How is the diameter related to the radius?

• Diameter is triple the radius

• Diameter is equal to the radius

• Diameter is double the radius

• Diameter is half the radius

What formula represents the radius if the diameter is given?

• R = D * 2

• R = D - 2

• R = D / 2

• R = D + 2

If the diameter of a circle is 36 units, what is the radius?

• 18 units

• 72 units

• 36 units

• 12 units

What is the correct calculation for the diameter if the radius is 19 units?

• 36 units

• 39 units

• 37 units

• 38 units