a.
c.
e.
12-16-20
4-5-6
3-3.5-4
3-2-1
3-2-1
1-2-3
4-5-6
4-5-6
4-5-6
9-8-7
9-8-7
7-8-9
10-11-12
10-11-12
10-11-12
15-14-13
15-14-13
13-14-15
16-17-18
16-17-18
16-17-18
21-20-19
21-20-19
19-20-21
22-23-24
22-23-24
22-23-24
27-26-25
27-26-25
25-26-27
28-29
28-29
28-29
b.
d.
x.
16-18-20
3-3.5-4
3-5-7
2-3-1
1-2-3
1-2-3
5-6-4
6-5-4
4-5-6
8-9-7
7-8-9
7-8-9
11-12-10
12-11-10
10-11-12
14-15-13
13-14-15
13-14-15
17-18-16
18-17-16
16-17-18
20-21-19
19-20-21
19-20-21
23-24-22
24-23-22
22-23-24
26-27-25
25-26-27
25-26-27
29-30-28
30-29-28
28-29
a. 16 m b. 16 m c. 5 m d. 3.5 m e. 3.5 m x. 5