Problem 144:
Given a point $B$, a point $M_{b}$ and a point $H_{a}$, construct the triangle ABC.

Construction: 
1. Using the point $B$ and the point $H_{a}$, construct a line $a$ (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 circle $k(M_{b},C)$, the line $a$, the point $M_{b}$ and the point $H_{a}$, construct a point $C$ (rule W05);
4. Using the point $M_{b}$ and the point $C$, construct a point $A$ (rule W01);
5. Using the point $C$ and the point $A$, construct a point $\_M_{b}$ (rule W01);
6. Using the point $B$ and the point $C$ construct the line $\_a$ (rule W02);
7. Using the point $A$ and the line $\_a$ construct the line $\_h_{a}$ (rule W10b);
8. Using the line $\_a$ and the line $\_h_{a}$ construct the point $\_H_{a}$ (rule W03);

Statement:
Prove that the point $H_{a}$ is identical to the point $\_H_{a}$.

