Horizon Fitness HTS-580 Series Operation Manual page 126

3. Distance-distance
N
P3
4. Four points intersect
N
P4
P1
126
r1 P4
P1
r2
P2
P2
a
b
P5
Known：
P1 the first known point
P2 the second known point
r1 radius, determined by the
distance from P1 to P3 or P4
r2 radius, determined by the
distance from P2 to P3 or P4
Unknown：
P3 the first COGO point
P4 the second COGO point
Known：
P1 the first known point
P2 the second known point
P3 the third known point
P4 the fourth known point
a the connection from P1 to P2
P3
b the connection from P3 to P4
Unknown：
P5 the COGO point