To solve this worksheet, we need to identify three parts for each circle diagram:
1.
Circle: The name of the circle is usually the letter at the very center point.
2.
Radius: A line segment connecting the center to any point on the edge (circumference). There might be more than one; listing one is usually enough, but listing all visible ones is thorough.
3.
Diameter: A straight line passing through the center that connects two points on the edge. It looks like two radii put together in a straight line.
Here is the step-by-step identification for each problem:
Problem 1)
*
Center: Point K. So, the Circle is
K.
*
Radius: Lines from center K to the edge are KM, KN, and KL.
*
Diameter: The line MN goes through the center K and touches both sides. So, the Diameter is
MN.
Problem 2)
*
Center: Point R. So, the Circle is
R.
*
Radius: Lines from center R to the edge are RU, RS, and RT.
*
Diameter: The line US goes through the center R. So, the Diameter is
US (or SU).
Problem 3)
*
Center: Point A. So, the Circle is
A.
*
Radius: Lines from center A to the edge are AC, AD, and AB.
*
Diameter: The line CD goes through the center A. So, the Diameter is
CD (or DC).
Problem 4)
*
Center: Point B. So, the Circle is
B.
*
Radius: Lines from center B to the edge are BD, BE, and BC.
*
Diameter: The line DE goes through the center B. So, the Diameter is
DE (or ED).
Problem 5)
*
Center: Point E. So, the Circle is
E.
*
Radius: Lines from center E to the edge are EG, EH, and EF.
*
Diameter: The line GH goes through the center E. So, the Diameter is
GH (or HG).
Problem 6)
*
Center: Point C. So, the Circle is
C.
*
Radius: Lines from center C to the edge are CD, CF, and CE.
*
Diameter: The line FE goes through the center C. So, the Diameter is
FE (or EF).
Problem 7)
*
Center: Point N. So, the Circle is
N.
*
Radius: Lines from center N to the edge are NP, NQ, and NO.
*
Diameter: The line PQ goes through the center N. So, the Diameter is
PQ (or QP).
Problem 8)
*
Center: Point M. So, the Circle is
M.
*
Radius: Lines from center M to the edge are MP, MO, and MN.
*
Diameter: The line PO goes through the center M. So, the Diameter is
PO (or OP).
Problem 9)
*
Center: Point O. So, the Circle is
O.
*
Radius: Lines from center O to the edge are OP, OQ, and OR.
*
Diameter: The line QR goes through the center O. So, the Diameter is
QR (or RQ).
──────────────────────────────────────
Final Answer:
1)
Circle:
K
Radius:
KM, KN, or KL
Diameter:
MN
2)
Circle:
R
Radius:
RU, RS, or RT
Diameter:
US
3)
Circle:
A
Radius:
AC, AD, or AB
Diameter:
CD
4)
Circle:
B
Radius:
BD, BE, or BC
Diameter:
DE
5)
Circle:
E
Radius:
EG, EH, or EF
Diameter:
GH
6)
Circle:
C
Radius:
CD, CF, or CE
Diameter:
FE
7)
Circle:
N
Radius:
NP, NQ, or NO
Diameter:
PQ
8)
Circle:
M
Radius:
MP, MO, or MN
Diameter:
PO
9)
Circle:
O
Radius:
OP, OQ, or OR
Diameter:
QR
Parent Tip: Review the logic above to help your child master the concept of diameter and radius worksheet.
