Labeling Parts of a Circle: Radius, Diameter, and Circumference

The video tutorial explains the basic elements of a circle, including the center, radius, diameter, and circumference. It begins by drawing a circle and labeling its center, followed by a detailed explanation of the radius as the fixed distance from the center to any point on the circle. The tutorial then describes the diameter as a line passing through the center, connecting two points on the circle, and highlights its relation to the radius. Finally, the video covers the concept of circumference, explaining it as the distance around the circle, akin to the length of a string wrapped around it.

What is the center of a circle?

• The point equidistant from all points on the circle

• The longest distance across the circle

• The line from the center to the circle

• The outer edge of the circle

How can the center of a circle be described?

• The midpoint of the diameter

• The point with the maximum distance from the circle

• The fixed point around which the circle is drawn

• The outermost point on the circle

What term describes the distance from the center to any point on the circle?

• Area

• Circumference

• Diameter

• Radius

What is true about all radii of a given circle?

• They vary in length

• They are longer than the diameter

• They are equal in length

• They are half the circumference

How many radii are there in a diameter?

• Two

• One

• Four

• Three

Which statement is true about the diameter of a circle?

• It is the same length regardless of how it is drawn

• It is longer than the circumference

• It changes with the size of the circle

• It is half the radius

What is the relationship between the radius and the diameter?

• The diameter is twice the radius

• They are unrelated

• The radius is twice the diameter

• They are equal

What does the circumference of a circle measure?

• Area inside the circle

• Distance across the circle

• Distance around the circle

• Length of two radii

If you place a string around a circle, what does it measure?

• Radius

• Diameter

• Center

• Circumference

Which tool would you use to measure the circumference?

• Compass

• String

• Ruler

• Protractor