Problem 377:
Given a point $M_{a}$, a point $H_{b}$ and a point $T_{a}$, construct the triangle ABC.

Construction: 
1. Using the point $M_{a}$ and the point $T_{a}$, construct a line $a$ (rule W02);
2. Using the point $H_{b}$ and the point $M_{a}$, construct a circle $k(M_{a},B)$ (rule W06);
3. Using the circle $k(M_{a},B)$ and the line $a$, construct a point $B$ and a point $C$ (rule W04);
4. Using the point $H_{b}$ and the point $C$, construct a line $b$ (rule W02);
5. Using the point $B$, the point $C$, the point $T_{a}$ and the line $a$, construct a point $T`_{a}$ (rule W19);
6. Using the point $T_{a}$ and the point $T`_{a}$, construct a circle $k_over(T_{a},T`_{a})$ (rule W09);
7. Using the circle $k_over(T_{a},T`_{a})$ and the line $b$, construct a point $A_{wc}$ and a point $A$ (rule W04);
8. Using the point $B$ and the point $C$, construct a point $\_M_{a}$ (rule W01);
9. Using the point $A$ and the point $C$ construct the line $\_b$ (rule W02);
10. Using the point $B$ and the line $\_b$ construct the line $\_h_{b}$ (rule W10b);
11. Using the line $\_b$ and the line $\_h_{b}$ construct the point $\_H_{b}$ (rule W03);
12. Using the point $A$ and the point $B$ construct the line $\_c$ (rule W02);
13. Using the point $B$, the point $A$ and the point $C$ and the line $\_c$ and the line $\_b$ construct the angle bisector $\_s_{a}$ (rule W17);
14. Using the point $B$ and the point $C$ construct the line $\_a$ (rule W02);
15. Using the line $\_s_{a}$ and the line $\_a$ construct the point $\_T_{a}$ (rule W03);

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

