Page 78 - 01-Yr5_Front cover-ccp.indd

80
• Number patterns on circles j ~~ ~9 , • Concentric circle patterns • E2J
7
OJ Follow the instructions on RM 78 to construct this circle pattern. OJ On RM 81, number the inner circle's points anticlockwise from 1 to 36,
-=I•M:t01El~ making sure that the 36 is directly below the 72 on the outer circle. ~=I•M3"1El~
Now rule lines joining 1-
PAGE 74 2 ... 2, and so on. 1, PAGE 75
You should get a shape like this.
OJ
68 69 70 71 72 1
"~
656667
64
63
62
61
60
Your pattern will look like this • and like this on completion. 59
ofter 7 lines hove been dfown . 58
55
The lines make
o heo(t·shoped curve 54
colled o cordlo!d. 53
It hos one cusp. 52
cusp
[II Now follow the instructions
on RM79.
You should get o
kidney-shaped curve
called a nephrold
with two cusps. CHALLENGE

Practical: following instructions on Practical: following instructions on
Resource Master 78. Resource Master 81 .

Challenge
Practical: following instructions on Practical: constructing the pattern
Resource Master 7q_ with points on the inner circle in a
clockwise direction.