Problem 288:
Given a point $O$, a point $M_{b}$ and a point $H_{a}$, construct the triangle ABC.

Construction: 
1. Using the point $O$ and the point $M_{b}$, construct a line $m_{b}$ (rule W02);
2. Using the point $H_{a}$ and the point $M_{b}$, construct a circle $k(M_{b},C)$ (rule W06);
3. Using the point $M_{b}$ and the line $m_{b}$, construct a line $b$ (rule W10a);
4. Using the circle $k(M_{b},C)$ and the line $b$, construct a point $C$ and a point $A$ (rule W04);
5. Using the point $H_{a}$ and the point $C$, construct a line $a$ (rule W02);
6. Using the point $C$ and the point $O$, construct a circle $k(O,C)$ (rule W06);
7. Using the circle $k(O,C)$, the line $a$, the point $O$ and the point $C$, construct a point $B$ (rule W05);
8. Using the point $C$ and the point $A$, construct a point $\_M_{b}$ (rule W01);
9. Using the point $A$ and the point $C$ construct the line $\_b$ (rule W02);
10. Using the point $B$ and the point $C$ construct the line $\_a$ (rule W02);
11. Using the point $B$ and the point $C$, construct a point $\_M_{a}$ (rule W01);
12. Using the point $\_M_{a}$ and the line $\_a$ construct the line $\_m_{a}$ (rule W10b);
13. Using the point $\_M_{b}$ and the line $\_b$ construct the line $\_m_{b}$ (rule W10b);
14. Using the line $\_m_{a}$ and the line $\_m_{b}$ construct the point $\_O$ (rule W03);
15. Using the point $A$ and the line $\_a$ construct the line $\_h_{a}$ (rule W10b);
16. Using the line $\_a$ and the line $\_h_{a}$ construct the point $\_H_{a}$ (rule W03);

Statement:
Prove that the point $O$ is identical to the point $\_O$.

