Measurements Of Polygons And Circles Worksheets - Lance Mangham, 6th Grade Math, Carroll Isd Page 21
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40Activity 10-16: Circles
Name:
How can I remember the difference between diameter and radius?
Radius comes from the same root word as “ray”. A ray of sunshine starts at the center of the sun and
goes out from that point. The radius of a circle starts at the center of the circle!
A
B
O
D
C
Solve the following problems using the circle above.
1.
The points on a circle are all the same distance from the...
2.
A line segment from the center to any point on the circle is a…
3.
A line segment with both points on the circle is a…
4.
A chord the passes through the center of a circle is a…
5.
A diameter of the circle in the drawing above is the segment…
6.
Which of the following is not a radius:
,
, or
?
OA OD
BC
7.
Which of the following is not a chord:
,
, or
?
BC OA
AC
8.
Part of a circle, such as between points B and C, is an…
9.
An angle whose vertex is at the center of a circle is a…
Which of the following is not a central angle:
10.
,
, or
?
∠
AOD
∠
COD
∠
BCA
11. Points A, B, C, and D are all the same __________ from point O.
12. If the length of AC is 20 cm, then the length of OC is…
13. If the length of OA is 20 cm, then the length of OD is…
14. If the length of OD is 20 cm, then the length of AC is…
15. The length of a radius is __________ the length of a diameter.
16. The set of points in a plane at a fixed distance from a given point is a…
th
Created by Lance Mangham, 6
grade math, Carroll ISD
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