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RESOURCE MASTER 77 RESOURCE MASTER 78

ITJ [I] Complete the table. lf 2n is more than 36, subtract 36 n 2n
2 from it. So you will join I q to 2 because (38 - 36) = 2. 1 2
Area of shaded triangles in A, B, C and D is 7·5 cm .
2 4
00 With a ruler, join pairs of points on the same row of
3 6
the table on the 36-point circle.
4 8
5 10
False. They all have the same area but the perimeters are 6 12
not all the same. 7 14
8 16
q 18
Challenge
10 20
11 22
Triangle Type of triangle Area
12 24
A right-angled isosceles 8cm 2 13 26
n - 2n 14 28
B acute-angled scalene 6cm 2 15 30
16 32
c obtuse-angled scalene 2cm 2 17 34 2n-36 I
18 36 •
1q 38 2
20 40 4
21 42 6
22 44 8
23 46 10
24 48 12
25 50 14
26 52 16
27 54 18
28 56 20
2q 58 22
30 60 24
31 62 26
32 64 28
33 66 30
34 68 32
35 70 34
36 72 36