The fixed point on the circle. *
1 point
chord
arc
center
circumference

This is a required question
13. It touches the circle in one point. *
1 point
radius
tangent
diameter
chord

This is a required question
14. The endpoints is on the circle. *
1 point
chord
arc
radius
diameter
15. The curved part on the circumference of the circle. *
1 point
chord
radius
arc
tangent
16. Which of the following is true? *
1 point
Arc of a circle is a part of a chord.
Arc of a circle is a part of the diameter.
Arc of a circle is a part of the circumference.
Arc of a circle is a part of the radius.
17. If the radius of the circle is 10 cm, how long is its diameter? *
1 point
20 cm
100 cm
30 cm
40 cm
18. If the diameter of the figure is 18 in, what is the radius? *
1 point
9 in.
6 in.
54 in
18 in.
19. Which of the following statement is NOT true? *
1 point
A radius of the circle is half the length of the diameter.
A radius of a circle is a line segment that connects the center to a point on the circle.
A radius of a circle is the line segment from one point of the circle to another point of the circle.
All line segments from the center of the circle to any point on the circle are equal.

This is a required question
20. The circumference of a circle is approximately three times the ____________. *
1 point
radius
chord
diameter
tangent


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