
Start with the given segment lengths for the hypotenuse (H) and the given leg (L). 

1 
Draw a long horizontal line 

2 
Mark a point C somewhere near the middle of that line. 

3 
Set the compass width to the length of the given leg L 

4 
With the compasses on C, mark an arc on each side of C, creating points P and A 

5 
Set the compass' width to the length of the given hypotenuse H. 

6 
With the compasses on P, make an arc above C 

7 
Without changing the compass width, move to A and make another arc over C, creating point B. 

8 
Using the straight edge, draw the lines BC and BA 


Done. ABC is a right triangle with the given leg and hypotenuse length 
