a=2b,c=d;
a+b+c=
1 |
4 |
b+c+d=
1 |
6 |
①可以化簡為:
3b+c=
1 |
4 |
c=
1 |
4 |
②可以化簡為:
b+2c=
1 |
6 |
把c=
1 |
4 |
b+2×(
1 |
4 |
1 |
6 |
b+
1 |
2 |
1 |
6 |
5b=
1 |
2 |
1 |
6 |
5b=
1 |
3 |
b=
1 |
15 |
c=
1 |
4 |
1 |
15 |
1 |
20 |
a+b+c+d,
=3b+2c,
=3×
1 |
15 |
1 |
20 |
=
1 |
5 |
1 |
10 |
=
3 |
10 |
答:這四個(gè)小三角形的面積總和是
3 |
10 |
故答案為:
3 |
10 |
1 |
4 |
1 |
6 |
1 |
4 |
1 |
6 |
1 |
4 |
1 |
4 |
1 |
6 |
1 |
4 |
1 |
4 |
1 |
6 |
1 |
2 |
1 |
6 |
1 |
2 |
1 |
6 |
1 |
3 |
1 |
15 |
1 |
4 |
1 |
15 |
1 |
20 |
1 |
15 |
1 |
20 |
1 |
5 |
1 |
10 |
3 |
10 |
3 |
10 |
3 |
10 |