Page 399 - Start Up Mathematics_8 (Non CCE)

Icosahedron

A B

(2 ) 2 3 4 × 3 2
2
C (19) 2
2
3 × 2 4 6 × 7 8 ÷ 2 5
5
4
4 × 2 3 2 × 2 5
3
4
5
4 3 7 ÷ 7 3 2 × 2 2 2
6
25 ÷ 5 4 2 6 × 2 3 (2 × 10)
3
4
11 × 2 21 2
2

12 0 5 3

3 × 2 4 6 3 13 × 7 3 18 2
2
4
4 × 6 2 2 × 5
5
2

10 2 3 4

11 ÷ 11 2 (2 ) 4 2 3 × 18 2 3 5 × 3 2
2
6
6 × 4 2 23 ÷ 23
5
2

2
13 2 5 × 5 2 × 3 3
3
18 × 2 7 2 7 × 4 2 B
2
2
6 × 2 4 4 × 2 3
2
3
A
C
Colour Code:

Answer Colour
Step 1: Solve and colour according to the colour code.
Between 0 to 200 yellow
Step 2: Cut along the outer lines and fold along the
201 to 400 green inner lines to get an icosahedron.
401 to 600 blue

601 or greater pink